diff --git a/.gitignore b/.gitignore
index f8ec13f..0b5cb05 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 build
 dist
 pyvcam.egg-info
+__pycache__/
+*.py[cod]
diff --git a/README.md b/README.md
index a825f99..10b5051 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,10 @@
-# PyVCAM Wrapper
-
-PyVCAM Wrapper is a Python3.X wrapper for the PVCAM SDK.
+# PyVCAM Wrapper
+
+> This fork is deprecated. Photometrics has since incorporated the live-mode
+> queue fix from PR #45 while closing issue #35, so downstream users should
+> install the maintained upstream package from PyPI instead of using this fork.
+
+PyVCAM Wrapper is a Python3.X wrapper for the PVCAM SDK.
 
 ## Getting Started
 Follow the instructions below to get PyVCAM up and running on your machine for development and testing.
@@ -14,10 +18,14 @@ Follow the instructions below to get PyVCAM up and running on your machine for d
 * PyVCAM was developed and tested using Microsoft Windows 10/64-bit. The build package also supports Linux, but testing has been minimal.
 
 
-### Installing
-When you are ready to install the wrapper use your command prompt to navigate into the directory that contains 
-setup.py and run ```python setup.py install``` 
-
+### Installing
+Use the maintained upstream release from Photometrics instead of installing this
+fork from source:
+
+```bash
+python -m pip install --upgrade PyVCAM
+```
+
 
 ### How to use the wrapper
 #### Create Camera Example
@@ -50,4 +58,4 @@ cam.speed_table_index = 0
 cam.gain = 1
 ```
 
-More information on how to use this wrapper and how it works can be found [here](https://github.com/Photometrics/PyVCAM/blob/master/docs/PyVCAM%20Wrapper.md).
+More information on how to use this wrapper and how it works can be found [here](https://github.com/Photometrics/PyVCAM/blob/master/docs/PyVCAM%20Wrapper.md).
diff --git a/docs/CheetSheet.txt b/docs/CheetSheet.txt
index 2fa0a75..5602f2a 100644
--- a/docs/CheetSheet.txt
+++ b/docs/CheetSheet.txt
@@ -1,5 +1,5 @@
 [[Installation]]
-python setup.py install
+python -m pip install --upgrade PyVCAM
 
 [[Camera Class]]
 
diff --git a/docs/PyVCAM Wrapper.md b/docs/PyVCAM Wrapper.md
index 46b1baa..3f3a8ab 100644
--- a/docs/PyVCAM Wrapper.md	
+++ b/docs/PyVCAM Wrapper.md	
@@ -1,4 +1,8 @@
-# PyVCAM Wrapper
+# PyVCAM Wrapper
+
+> This fork is deprecated. Photometrics has since incorporated the live-mode
+> queue fix from PR #45 while closing issue #35, so downstream users should
+> install the maintained upstream package from PyPI instead of using this fork.
 
 - [PyVCAM Wrapper](#pyvcam-wrapper)
   * [src](#src)
diff --git a/src/pyvcam/__init__.py b/src/pyvcam/__init__.py
index e69de29..50302d9 100644
--- a/src/pyvcam/__init__.py
+++ b/src/pyvcam/__init__.py
@@ -0,0 +1,11 @@
+"""Local fork deprecation notice for PyVCAM."""
+
+from warnings import warn
+
+
+warn(
+    "This fork of PyVCAM is deprecated. Install the maintained "
+    "Photometrics release from PyPI instead.",
+    DeprecationWarning,
+    stacklevel=2,
+)
diff --git a/tests/test_deprecated_fork.py b/tests/test_deprecated_fork.py
new file mode 100644
index 0000000..50bd141
--- /dev/null
+++ b/tests/test_deprecated_fork.py
@@ -0,0 +1,24 @@
+import importlib
+import pathlib
+import sys
+import unittest
+import warnings
+
+
+SRC_DIR = pathlib.Path(__file__).resolve().parents[1] / "src"
+
+
+class DeprecatedForkTests(unittest.TestCase):
+    def test_import_warns_to_use_upstream_release(self):
+        sys.path.insert(0, str(SRC_DIR))
+        try:
+            sys.modules.pop("pyvcam", None)
+            with warnings.catch_warnings(record=True) as caught:
+                warnings.simplefilter("always")
+                importlib.import_module("pyvcam")
+        finally:
+            sys.modules.pop("pyvcam", None)
+            sys.path.remove(str(SRC_DIR))
+
+        self.assertGreater(len(caught), 0)
+        self.assertIn("Photometrics release from PyPI", str(caught[0].message))