diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index b6df08bb..05f33654 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -20,7 +20,7 @@ on:
 jobs:
   dist:
     name: Create dist
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
@@ -37,7 +37,7 @@ jobs:
       id-token: write # for trusted publishing
       attestations: write # for trusted publishing
       contents: read
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     if: github.event_name == 'release' && github.event.action == 'published'
 
     steps:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4ff448fe..5c900674 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ env:
 jobs:
   lint:
     name: Lint
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
@@ -44,14 +44,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        environment:
-          - tests-py311
-          - tests-py314
-          - tests-numpy1
-          - tests-backends
-          - tests-backends-py311
-          - tests-nogil
-        runs-on: [ubuntu-latest]
+        include:
+          - environment: tests-py311
+            runs-on: ubuntu-latest
+          - environment: tests-py314
+            runs-on: ubuntu-slim
+          - environment: tests-numpy1
+            runs-on: ubuntu-slim
+          - environment: tests-nogil
+            runs-on: ubuntu-slim
+          - environment: tests-backends
+            runs-on: ubuntu-latest
+          - environment: tests-backends-py311
+            runs-on: ubuntu-latest
 
     environment:
       name: ci-checks
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 48660dec..4c61170a 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -11,7 +11,7 @@ concurrency:
 jobs:
   docs-build:
     name: Build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
 
     permissions:
       contents: read
@@ -40,7 +40,7 @@ jobs:
     name: Deploy
     if: ${{ github.event.workflow_run.event == 'push' }}
     needs: docs-build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
 
     permissions:
       contents: write # needed for the deploy step