diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b1149364..343dd961 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ['ubuntu-22.04', 'windows-2022', 'macos-12']
+        os: ['ubuntu-24.04', 'windows-2022', 'macos-14']
     steps:
       - name: Check out Forest code
         uses: actions/checkout@v4
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 9ab88feb..dd4dfb23 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -7,7 +7,7 @@ on:
 jobs:
   build-html-docs:
     name: 'Build HTML docs'
-    runs-on: 'ubuntu-22.04'
+    runs-on: 'ubuntu-24.04'
     defaults:
       run:
         working-directory: './docs'