diff --git a/.github/workflows/bridge.yml b/.github/workflows/bridge.yml
index 5d6ebbb57..2a69ca871 100644
--- a/.github/workflows/bridge.yml
+++ b/.github/workflows/bridge.yml
@@ -13,7 +13,7 @@ jobs:
         job:
           - {
               target: x86_64-unknown-linux-gnu,
-              os: ubuntu-18.04,
+              os: ubuntu-20.04,
               extra-build-args: "",
             }
     steps:
diff --git a/.github/workflows/flutter-build.yml b/.github/workflows/flutter-build.yml
index bf73bdaa1..f94e2dc9c 100644
--- a/.github/workflows/flutter-build.yml
+++ b/.github/workflows/flutter-build.yml
@@ -394,7 +394,7 @@ jobs:
           - {
               arch: x86_64,
               target: armv7-linux-androideabi,
-              os: ubuntu-18.04,
+              os: ubuntu-20.04,
               extra-build-features: "",
               openssl-arch: android-arm
             }
@@ -709,14 +709,14 @@ jobs:
           - {
               arch: aarch64,
               target: aarch64-unknown-linux-gnu,
-              os: ubuntu-20.04,
+              os: ubuntu-20.04, # just for naming package, not running host
               use-cross: true,
               extra-build-features: "",
             }
           - {
               arch: aarch64,
               target: aarch64-unknown-linux-gnu,
-              os: ubuntu-18.04, # just for naming package, not running host
+              os: ubuntu-20.04, # just for naming package, not running host
               use-cross: true,
               extra-build-features: "appimage",
             }
@@ -1281,7 +1281,7 @@ jobs:
           - {
               arch: x86_64,
               target: x86_64-unknown-linux-gnu,
-              os: ubuntu-18.04,
+              os: ubuntu-18.04, 
               extra-build-features: "",
             }
           - {