diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bdb5574b..6f5be533 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ on:
         - build
 jobs:
   build:
-    runs-on: macos-10.15
+    runs-on: macos-12
     steps:
     - uses: actions/checkout@v2
     - uses: cachix/install-nix-action@v9
diff --git a/.github/workflows/debug.yml b/.github/workflows/debug.yml
index e8e912da..fd9bf9dc 100644
--- a/.github/workflows/debug.yml
+++ b/.github/workflows/debug.yml
@@ -10,7 +10,7 @@ on:
         - debug
 jobs:
   debug:
-    runs-on: macos-10.15
+    runs-on: macos-12
     steps:
     - uses: actions/checkout@v2
     - uses: cachix/install-nix-action@v15
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 57b63706..68594ae6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -4,7 +4,7 @@ on:
   push:
 jobs:
   tests:
-    runs-on: macos-10.15
+    runs-on: macos-12
     timeout-minutes: 30
     steps:
     - uses: actions/checkout@v2
@@ -13,7 +13,7 @@ jobs:
     - run: nix-build ./release.nix -I nixpkgs=channel:nixpkgs-21.05-darwin -I darwin=. -A manpages
     - run: nix-build ./release.nix -I nixpkgs=channel:nixpkgs-21.05-darwin -I darwin=. -A examples.simple
   install:
-    runs-on: macos-10.15
+    runs-on: macos-12
     timeout-minutes: 30
     steps:
     - uses: actions/checkout@v2
@@ -39,7 +39,7 @@ jobs:
       with:
         limit-access-to-actor: true
   install-flake:
-    runs-on: macos-10.15
+    runs-on: macos-12
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@v2
diff --git a/.github/workflows/update-manual.yml b/.github/workflows/update-manual.yml
index c9b70b16..c8083d19 100644
--- a/.github/workflows/update-manual.yml
+++ b/.github/workflows/update-manual.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   update-manual:
-    runs-on: macos-10.15
+    runs-on: macos-12
     steps:
     - name: Checkout repository
       uses: actions/checkout@v3