diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b757fcccfa8..7e047dd0f32 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
 
         include:
           - name: linux
-            os: ubuntu-latest
+            os: ubuntu-20.04
             artifact_name: nargo
             asset_name: nargo-linux
           - name: windows
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 2a2a267f970..cdd2b2d1e4b 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -12,7 +12,7 @@ env:
 jobs:
   check_n_test:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix:
@@ -49,7 +49,7 @@ jobs:
 
   clippy:
     name: cargo clippy
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
@@ -71,7 +71,7 @@ jobs:
 
   format:
     name: cargo fmt
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2