diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f841d99..b860d51 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,8 +14,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ['3.9', '3.10', '3.11']
+        os: [macos-latest, windows-latest]
+        python: ["3.9"]
 
     steps:
       - uses: compas-dev/compas-actions.build@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3b34881..41abb23 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -3,15 +3,15 @@ name: release
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
 
 jobs:
   build:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ['3.9', '3.10', '3.11']
+        os: [macos-latest, windows-latest]
+        python: ["3.9"]
 
     steps:
       - uses: compas-dev/compas-actions.build@v4