diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b2f2fb0..089d88e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ env:
 jobs:
   purge_artifacts:
     name: Purge old artifacts
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-21.04
     steps:
       - name: Purge old artifacts
         uses: c-hive/gha-remove-artifacts@v1
@@ -22,7 +22,7 @@ jobs:
           skip-recent: 3
   build_base:
     name: Build base image
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-21.04
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -42,7 +42,7 @@ jobs:
   build_target_bases:
     name: Build target base image
     needs: build_base
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-21.04
     strategy:
       fail-fast: false
       matrix:
@@ -66,7 +66,7 @@ jobs:
   build_targets:
     name: Build target-variant image
     needs: build_target_bases
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-21.04
     strategy:
       fail-fast: false
       matrix:
@@ -103,7 +103,7 @@ jobs:
   build_ffmpeg:
     name: Build ffmpeg
     needs: build_targets
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-21.04
     strategy:
       fail-fast: false
       matrix:
@@ -129,7 +129,7 @@ jobs:
     name: Publish release
     if: github.event_name != 'push'
     needs: build_ffmpeg
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-21.04
     steps:
       - name: Checkout
         uses: actions/checkout@v2