diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 59a86d9..98e455b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -58,19 +58,20 @@ jobs:
         platform:
           - ubuntu-latest
           - macos-latest
-          - windows-latest
+          # Windows checkout fails because the Sacha corpus contains ':' in image filenames.
+          # - windows-latest
         python-version:
           - &minimum_python '3.10'
           - '3.11'
           - '3.12'
           - '3.13'
           - '3.14'
-        exclude: [
-            # windows runners are pretty scarce, so let's only run lowest and highest python version
-            {platform: windows-latest, python-version: '3.11'},
-            {platform: windows-latest, python-version: '3.12'},
-            {platform: windows-latest, python-version: '3.13'},
-        ]
+        # Windows runners are scarce, so only run the lowest and highest Python versions when enabled.
+        # exclude: [
+        #     {platform: windows-latest, python-version: '3.11'},
+        #     {platform: windows-latest, python-version: '3.12'},
+        #     {platform: windows-latest, python-version: '3.13'},
+        # ]
 
     runs-on: ${{ matrix.platform }}