diff --git a/.github/workflows/linux-ci.yml b/.github/workflows/linux-ci.yml
index 5e29d4f23..54a946dd9 100644
--- a/.github/workflows/linux-ci.yml
+++ b/.github/workflows/linux-ci.yml
@@ -7,8 +7,6 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python_version: ['3.12', '3.11', '3.10', '3.9']
-        sklearn_version: ['==1.5.0', '==1.4.2', '==1.3.2', '==1.2.2', '==1.1.3']
         include:
           - sklearn_version: '==1.5.0'
             documentation: 0
diff --git a/.github/workflows/windows-macos-ci.yml b/.github/workflows/windows-macos-ci.yml
index 8165e5fbb..488cdd658 100644
--- a/.github/workflows/windows-macos-ci.yml
+++ b/.github/workflows/windows-macos-ci.yml
@@ -7,8 +7,6 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest]
-        python_version: ['3.11', '3.10', '3.9']
-        sklearn_version: ['==1.5.0', '==1.4.2', '==1.3.2', '==1.2.2', '==1.1.3']
         include:
           - sklearn_version: '==1.5.0'
             python_version: '3.11'