From b735d6090f21fadcd65f03a0062c0e538d49552f Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 11:07:46 +0100
Subject: [PATCH 01/22] mise venv for local development

---
 .gitignore |  1 +
 .mise.toml | 13 +++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 .mise.toml

diff --git a/.gitignore b/.gitignore
index 0211f3ae..ccadd9ee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ build
 .idea/
 .python-version
 venv
+.venv
diff --git a/.mise.toml b/.mise.toml
new file mode 100644
index 00000000..bb4904ac
--- /dev/null
+++ b/.mise.toml
@@ -0,0 +1,13 @@
+[env]
+MISE_FETCH_REMOTE_VERSIONS_TIMEOUT = "30s"
+
+_.python.venv = {
+  path = ".venv",
+  create = true,
+}
+
+[tools]
+python = "3.9"
+
+[tasks.test]
+run = 'make install test'

From aa04d43928b0c83015698c0aeb1754abb0749dc0 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 11:08:10 +0100
Subject: [PATCH 02/22] Test with more recent Python 3.x versions

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index da2daf6d..8b5ea537 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14]
 
     steps:
       - uses: actions/checkout@v2

From 7edc1598e697dd5915aefe2e010ffadbd53a11a7 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 11:30:29 +0100
Subject: [PATCH 03/22] Sync setup and test matrix Python versions

---
 .github/workflows/test.yml | 2 +-
 setup.py                   | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8b5ea537..4fb84ccc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14]
+        python-version: [3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/setup.py b/setup.py
index 143a9ab5..7f7048b7 100644
--- a/setup.py
+++ b/setup.py
@@ -56,5 +56,10 @@
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
     ],
 )

From 01bff49f1a2a99d0a3e99c66b6c8dafdbc565de9 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 13:36:44 +0100
Subject: [PATCH 04/22] Update GHA; quote Python versions in test matrix

---
 .github/workflows/release.yml | 4 ++--
 .github/workflows/test.yml    | 6 +++---
 requirements.txt              | 6 ++++++
 3 files changed, 11 insertions(+), 5 deletions(-)
 create mode 100644 requirements.txt

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 871263d5..1f28c5c0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,9 +18,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
           python-version: '3.x'
           cache: 'pip'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4fb84ccc..a3245a29 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,12 +8,12 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14]
+        python-version: [ "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 00000000..c9aa3cc8
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,6 @@
+backoff==2.2.1
+monotonic==1.6
+mock==2.0.0
+pylint==3.3.3
+python-dateutil==2.8.2
+requests>=2.32.2
\ No newline at end of file

From e866debadea78f1d3b2be943d2dc0335c7379abd Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 13:42:10 +0100
Subject: [PATCH 05/22] Python 3.6 is not supported by newer setup-python
 action

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a3245a29..2081dc18 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [ "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
 
     steps:
       - uses: actions/checkout@v6

From e068f47b9500bb9f6d28a4ee60184d1b0d244faa Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 13:46:18 +0100
Subject: [PATCH 06/22] Downgrade setup-python, re-enable Python 3.6, and run
 whole test matrix on failure

---
 .github/workflows/test.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2081dc18..de3b1bff 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,13 +7,14 @@ jobs:
     runs-on: ubuntu-latest
 
     strategy:
+      fail-fast: false
       matrix:
-        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        python-version: [ "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
 
     steps:
       - uses: actions/checkout@v6
 
-      - uses: actions/setup-python@v6
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'

From 880bd73164e8276c705e071ae999cd53b8723009 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 13:54:08 +0100
Subject: [PATCH 07/22] Split linting out from tests

---
 .github/workflows/lint.yml | 19 +++++++++++++++++++
 .mise.toml                 |  3 +++
 Makefile                   |  6 ++++--
 3 files changed, 26 insertions(+), 2 deletions(-)
 create mode 100644 .github/workflows/lint.yml

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
new file mode 100644
index 00000000..565e7cb2
--- /dev/null
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,19 @@
+name: Test
+
+on: [push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+          cache: 'pip'
+          cache-dependency-path: setup.py
+
+      - run: pip3 install -e '.[test]'
+      - run: make lint
diff --git a/.mise.toml b/.mise.toml
index bb4904ac..4522c872 100644
--- a/.mise.toml
+++ b/.mise.toml
@@ -11,3 +11,6 @@ python = "3.9"
 
 [tasks.test]
 run = 'make install test'
+
+[tasks.lint]
+run = 'make install lint'
diff --git a/Makefile b/Makefile
index 8ea2abef..885bed58 100644
--- a/Makefile
+++ b/Makefile
@@ -2,8 +2,10 @@ install:
 	pip install --edit .[test]
 
 test:
+	python -m unittest customerio/analytics/test/*.py -v
+
+lint:
 	pylint --rcfile=.pylintrc --reports=y --exit-zero customerio/analytics
 	flake8 --max-complexity=10 --statistics customerio/analytics || true
-	python -m unittest customerio/analytics/test/*.py -v
 
-.PHONY: install test
+.PHONY: install test lint

From d7873feab11f426bfa2d86c192f2aa0c546fd487 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 13:59:49 +0100
Subject: [PATCH 08/22] Remove Python 3.6, 3.7 from test matrix

---
 .github/workflows/test.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index de3b1bff..adb4a249 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,12 +9,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
 
     steps:
       - uses: actions/checkout@v6
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'

From c747ab137e6029bdf5aa61453795fc389bd49fbf Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 14:00:32 +0100
Subject: [PATCH 09/22] Bump setup-python in lint too

---
 .github/workflows/lint.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 565e7cb2..e06f1cba 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.10"
           cache: 'pip'

From c65edf8c49aa17ceddb56b4deeb950f127865874 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 14:02:08 +0100
Subject: [PATCH 10/22] Typo

---
 .github/workflows/lint.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index e06f1cba..ab54ed3c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -1,4 +1,4 @@
-name: Test
+name: Lint
 
 on: [push]
 

From 5a8da0c53c29c80d1f4c41d445bcffb1c46123b6 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Wed, 17 Jun 2026 14:03:01 +0100
Subject: [PATCH 11/22] Another typo

---
 .github/workflows/lint.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index ab54ed3c..be41a45e 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -3,7 +3,7 @@ name: Lint
 on: [push]
 
 jobs:
-  test:
+  lint:
     runs-on: ubuntu-latest
 
     steps:

From c6b8a3fdb0363663d69f216251af48de21d691f4 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Mon, 22 Jun 2026 14:07:08 +0100
Subject: [PATCH 12/22] Remove support for Python 3.6, 3.7

---
 setup.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/setup.py b/setup.py
index 7f7048b7..0c6e4e60 100644
--- a/setup.py
+++ b/setup.py
@@ -52,8 +52,6 @@
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",

From 1688eba0e47d18a64cb2d98cfd7e187297de8fa7 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Mon, 22 Jun 2026 14:07:24 +0100
Subject: [PATCH 13/22] Latest doc URLs

---
 README.md | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index b21aa40c..7c2f61b4 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-Customer.io Data Pipelines analytics client for Python.
+# Customer.io Data Pipelines analytics client for Python.
 
 ## Installation
 
@@ -40,6 +40,6 @@ analytics.track(user_id=4, event='order_complete')
 
 The links below contain more detailed documentation on how to use this library:
 
-* [Documentation](https://customer.io/docs/cdp/sources/connections/servers/python/)
-* [Specs](https://customer.io/docs/cdp/sources/source-spec/source-events/)
+* [Documentation](https://docs.customer.io/integrations/data-in/connections/servers/python/)
+* [Specs](https://docs.customer.io/integrations/data-in/source-spec/incoming-data/)
 * [PyPi](https://pypi.org/project/customerio-cdp-analytics/)

From 1fc2506c305dc0a354b97860f7167fa7029c5083 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Mon, 22 Jun 2026 14:08:37 +0100
Subject: [PATCH 14/22] Bump version to 0.1.0

---
 customerio/analytics/version.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/customerio/analytics/version.py b/customerio/analytics/version.py
index bc784a3b..1f6518e6 100644
--- a/customerio/analytics/version.py
+++ b/customerio/analytics/version.py
@@ -1 +1 @@
-VERSION = '0.0.2'
+VERSION = '0.1.0'

From 9f4d9918746e190ad3f9e5db727cd0cd3f414dfc Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Mon, 22 Jun 2026 14:18:11 +0100
Subject: [PATCH 15/22] Synchronise setup.py and requirements.txt

---
 requirements.txt |  1 +
 setup.py         | 11 ++++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/requirements.txt b/requirements.txt
index c9aa3cc8..0867b28b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 backoff==2.2.1
+flake8==3.7.9
 monotonic==1.6
 mock==2.0.0
 pylint==3.3.3
diff --git a/setup.py b/setup.py
index 0c6e4e60..1988acb4 100644
--- a/setup.py
+++ b/setup.py
@@ -16,15 +16,15 @@
 '''
 
 install_requires = [
-    "requests~=2.7",
-    "monotonic~=1.5",
-    "backoff~=2.1",
-    "python-dateutil~=2.2"
+    "requests>=2.32.2",
+    "monotonic~=1.6",
+    "backoff~=2.2",
+    "python-dateutil~=2.8"
 ]
 
 tests_require = [
     "mock==2.0.0",
-    "pylint==2.8.0",
+    "pylint==3.3.3",
     "flake8==3.7.9",
 ]
 
@@ -38,6 +38,7 @@
     maintainer_email='cdp@customer.io',
     test_suite='analytics.test.all',
     packages=['customerio.analytics'],
+    # Newer versions are not tested with Python 3.6 or 3.7.
     python_requires='>=3.6.0',
     license='MIT License',
     install_requires=install_requires,

From 22b9a98aacd9d11a2d606a9eb0c17a3e7d3b671c Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Mon, 22 Jun 2026 14:20:45 +0100
Subject: [PATCH 16/22] Relax pylint

---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 1988acb4..d1802d24 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 
 tests_require = [
     "mock==2.0.0",
-    "pylint==3.3.3",
+    "pylint>=3.2.0",
     "flake8==3.7.9",
 ]
 

From c761e3134f49b398bd17f5fd17506e250f25363c Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Thu, 25 Jun 2026 10:09:38 +0100
Subject: [PATCH 17/22] Bump version to 1.0.0; drop support for Python 3.6, 3.7
 because of requests requirement

---
 .mise.toml                      | 2 +-
 Makefile                        | 6 +++++-
 customerio/analytics/version.py | 2 +-
 requirements.txt                | 2 +-
 setup.py                        | 3 +--
 5 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/.mise.toml b/.mise.toml
index 4522c872..de3ab232 100644
--- a/.mise.toml
+++ b/.mise.toml
@@ -7,7 +7,7 @@ _.python.venv = {
 }
 
 [tools]
-python = "3.9"
+python = "3.11"
 
 [tasks.test]
 run = 'make install test'
diff --git a/Makefile b/Makefile
index 885bed58..a0011a00 100644
--- a/Makefile
+++ b/Makefile
@@ -8,4 +8,8 @@ lint:
 	pylint --rcfile=.pylintrc --reports=y --exit-zero customerio/analytics
 	flake8 --max-complexity=10 --statistics customerio/analytics || true
 
-.PHONY: install test lint
+clean:
+	rm -rf .venv
+	mise deps
+
+.PHONY: install test lint clean
diff --git a/customerio/analytics/version.py b/customerio/analytics/version.py
index 1f6518e6..1e5a6058 100644
--- a/customerio/analytics/version.py
+++ b/customerio/analytics/version.py
@@ -1 +1 @@
-VERSION = '0.1.0'
+VERSION = '1.0.0'
diff --git a/requirements.txt b/requirements.txt
index 0867b28b..86364777 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,4 @@ monotonic==1.6
 mock==2.0.0
 pylint==3.3.3
 python-dateutil==2.8.2
-requests>=2.32.2
\ No newline at end of file
+requests>=2.32.4
\ No newline at end of file
diff --git a/setup.py b/setup.py
index d1802d24..1ec92d33 100644
--- a/setup.py
+++ b/setup.py
@@ -38,8 +38,7 @@
     maintainer_email='cdp@customer.io',
     test_suite='analytics.test.all',
     packages=['customerio.analytics'],
-    # Newer versions are not tested with Python 3.6 or 3.7.
-    python_requires='>=3.6.0',
+    python_requires='>=3.8.0',
     license='MIT License',
     install_requires=install_requires,
     extras_require={

From 5b5a65b8d7514fadefdbedcd00b6f6687157cea2 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Thu, 25 Jun 2026 10:16:07 +0100
Subject: [PATCH 18/22] Bump version to 1.0.0

---
 .bumpversion.cfg | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 6ad311a9..facbe377 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.0.2
+current_version = 1.0.0
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
 serialize =
 	{major}.{minor}.{patch}

From d5ded78302b0c16c2825f20c2cc1a2a3ab2163ef Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Thu, 25 Jun 2026 10:20:36 +0100
Subject: [PATCH 19/22] Review feedback

---
 Makefile | 2 +-
 setup.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index a0011a00..5f587814 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ test:
 
 lint:
 	pylint --rcfile=.pylintrc --reports=y --exit-zero customerio/analytics
-	flake8 --max-complexity=10 --statistics customerio/analytics || true
+	flake8 --max-complexity=10 --statistics --exit-zero customerio/analytics
 
 clean:
 	rm -rf .venv
diff --git a/setup.py b/setup.py
index 1ec92d33..e2463395 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 '''
 
 install_requires = [
-    "requests>=2.32.2",
+    "requests>=2.32.4",
     "monotonic~=1.6",
     "backoff~=2.2",
     "python-dateutil~=2.8"

From 7673d4e8b5fe7a90e02acd2c22ce7a91d38d87bc Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Thu, 25 Jun 2026 10:44:15 +0100
Subject: [PATCH 20/22] Add lint-ci which fails only on linting errors

---
 .github/workflows/lint.yml | 2 +-
 Makefile                   | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index be41a45e..c2a97a51 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -16,4 +16,4 @@ jobs:
           cache-dependency-path: setup.py
 
       - run: pip3 install -e '.[test]'
-      - run: make lint
+      - run: make lint-ci
diff --git a/Makefile b/Makefile
index 5f587814..0d6122af 100644
--- a/Makefile
+++ b/Makefile
@@ -8,8 +8,12 @@ lint:
 	pylint --rcfile=.pylintrc --reports=y --exit-zero customerio/analytics
 	flake8 --max-complexity=10 --statistics --exit-zero customerio/analytics
 
+lint-ci:
+	pylint --rcfile=.pylintrc --exit-zero --fail-on=E customerio/analytics
+	flake8 --max-complexity=10 --max-line-length=100 --statistics customerio/analytics
+
 clean:
 	rm -rf .venv
 	mise deps
 
-.PHONY: install test lint clean
+.PHONY: install test lint lint-ci clean

From de0ee97b7eaba4b76fb037edb67267978703aa95 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Thu, 25 Jun 2026 10:58:46 +0100
Subject: [PATCH 21/22] Prefer using pip from venv to uv

---
 .mise.toml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.mise.toml b/.mise.toml
index de3ab232..826f9b46 100644
--- a/.mise.toml
+++ b/.mise.toml
@@ -6,6 +6,10 @@ _.python.venv = {
   create = true,
 }
 
+[settings]
+python.uv_venv_auto = false
+python.venv_stdlib = true
+
 [tools]
 python = "3.11"
 

From ddc5d6ad37d93a57dd64e55cbccdf0ed4d812e63 Mon Sep 17 00:00:00 2001
From: Richard Dawe <rich.dawe@customer.io>
Date: Thu, 25 Jun 2026 11:00:10 +0100
Subject: [PATCH 22/22] Fix pylint errors: missing __init__.py, import
 ordering, exception handling

Add customerio/__init__.py so pylint can resolve the package hierarchy.
Fix raise-missing-from, return-in-finally, and import ordering warnings.
Fix RuntimeError formatting bug where %-placeholders were not interpolated.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 customerio/__init__.py                |  0
 customerio/analytics/client.py        | 17 +++++++++--------
 customerio/analytics/consumer.py      | 10 +++++-----
 customerio/analytics/request.py       |  4 ++--
 customerio/analytics/test/consumer.py |  5 +++--
 5 files changed, 19 insertions(+), 17 deletions(-)
 create mode 100644 customerio/__init__.py

diff --git a/customerio/__init__.py b/customerio/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/customerio/analytics/client.py b/customerio/analytics/client.py
index 4185d776..c5387fb3 100644
--- a/customerio/analytics/client.py
+++ b/customerio/analytics/client.py
@@ -1,19 +1,18 @@
-from datetime import datetime
-from uuid import uuid4
-import logging
-import numbers
 import atexit
 import json
+import logging
+import numbers
+import queue
+from datetime import datetime
+from uuid import uuid4
 
 from dateutil.tz import tzutc
 
-from customerio.analytics.utils import guess_timezone, clean
 from customerio.analytics.consumer import Consumer, MAX_MSG_SIZE
 from customerio.analytics.request import post, DatetimeSerializer
+from customerio.analytics.utils import guess_timezone, clean
 from customerio.analytics.version import VERSION
 
-import queue
-
 ID_TYPES = (numbers.Number, str)
 
 
@@ -269,7 +268,9 @@ def _enqueue(self, msg):
         # Check message size.
         msg_size = len(json.dumps(msg, cls=DatetimeSerializer).encode())
         if msg_size > MAX_MSG_SIZE:
-            raise RuntimeError('Message exceeds %skb limit. (%s)', str(int(MAX_MSG_SIZE / 1024)), str(msg))
+            raise RuntimeError(
+                'Message exceeds %dkb limit. (%s)' % (MAX_MSG_SIZE // 1024, msg)
+            )
 
         # if send is False, return msg as if it was successfully queued
         if not self.send:
diff --git a/customerio/analytics/consumer.py b/customerio/analytics/consumer.py
index d9b05479..8f478b54 100644
--- a/customerio/analytics/consumer.py
+++ b/customerio/analytics/consumer.py
@@ -1,13 +1,13 @@
+import json
 import logging
+from queue import Empty
 from threading import Thread
-import monotonic
+
 import backoff
-import json
+import monotonic
 
 from customerio.analytics.request import post, APIError, DatetimeSerializer
 
-from queue import Empty
-
 MAX_MSG_SIZE = 32 << 10
 
 # Our servers only accept batches less than 500KB. Here limit is set slightly
@@ -73,7 +73,7 @@ def upload(self):
             # mark items as acknowledged from queue
             for _ in batch:
                 self.queue.task_done()
-            return success
+        return success
 
     def next(self):
         """Return the next batch of items to upload."""
diff --git a/customerio/analytics/request.py b/customerio/analytics/request.py
index 0b92f4cf..5b0eb99a 100644
--- a/customerio/analytics/request.py
+++ b/customerio/analytics/request.py
@@ -56,8 +56,8 @@ def post(write_key, host=None, gzip=False, timeout=15, proxies=None, **kwargs):
         payload = res.json()
         log.debug('received response: %s', payload)
         raise APIError(res.status_code, payload['code'], payload['message'])
-    except ValueError:
-        raise APIError(res.status_code, 'unknown', res.text)
+    except ValueError as exc:
+        raise APIError(res.status_code, 'unknown', res.text) from exc
 
 
 class APIError(Exception):
diff --git a/customerio/analytics/test/consumer.py b/customerio/analytics/test/consumer.py
index 5ef02fc5..057f6338 100644
--- a/customerio/analytics/test/consumer.py
+++ b/customerio/analytics/test/consumer.py
@@ -1,7 +1,8 @@
+import json
+import time
 import unittest
+
 import mock
-import time
-import json
 
 try:
     from queue import Queue