diff --git a/.github/workflows/nightly-build.yml b/.github/workflows/nightly-build.yml
index b451ae4..7b4a7d5 100644
--- a/.github/workflows/nightly-build.yml
+++ b/.github/workflows/nightly-build.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         ARCH: [amd64, armhf, arm64, i386]
-        DEBIAN_VERSION: [stretch, buster, bullseye]
+        DEBIAN_VERSION: [stretch, buster]
     env:
       ARCH: ${{matrix.ARCH}}
       DEBIAN_VERSION: ${{matrix.DEBIAN_VERSION}}
diff --git a/.github/workflows/test-and-build.yaml b/.github/workflows/test-and-build.yaml
index 363752b..32d24e7 100644
--- a/.github/workflows/test-and-build.yaml
+++ b/.github/workflows/test-and-build.yaml
@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         ARCH: [amd64, armhf, arm64, i386]
-        DEBIAN_VERSION: [stretch, buster, bullseye]
+        DEBIAN_VERSION: [stretch, buster]
     env:
       ARCH: ${{matrix.ARCH}}
       DEBIAN_VERSION: ${{matrix.DEBIAN_VERSION}}