diff --git a/.github/workflows/ruby_head.yml b/.github/workflows/ruby_head.yml
index 4e0d8ae..c626458 100644
--- a/.github/workflows/ruby_head.yml
+++ b/.github/workflows/ruby_head.yml
@@ -8,7 +8,7 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-    continue-on-error: true
+    continue-on-error: false
     strategy:
       matrix:
         ruby: [
diff --git a/.github/workflows/truffleruby.yml b/.github/workflows/truffleruby.yml
index 5f09138..ece4947 100644
--- a/.github/workflows/truffleruby.yml
+++ b/.github/workflows/truffleruby.yml
@@ -8,7 +8,7 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-    continue-on-error: true
+    continue-on-error: false
     strategy:
       matrix:
         ruby: [