diff --git a/.github/workflows/build-binaries.yml b/.github/workflows/build-binaries.yml
index 77530ff14..45587fb2c 100644
--- a/.github/workflows/build-binaries.yml
+++ b/.github/workflows/build-binaries.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2016, macos-latest, ubuntu-latest]
+        os: [windows-2016, macos-latest, ubuntu-18.04]
     env:
       SIGNAL_ENV: production
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 6e88e1435..78779acaa 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2016, macos-latest, ubuntu-latest]
+        os: [windows-2016, macos-latest, ubuntu-18.04]
     env:
       SIGNAL_ENV: production
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 69b325462..3ea28d4a2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2016, macos-latest, ubuntu-latest]
+        os: [windows-2016, macos-latest, ubuntu-18.04]
     env:
       SIGNAL_ENV: production
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}