diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index cd9298aeeb..afa5af93f2 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os:
-          - "ubuntu-18.04"
+          - "ubuntu-20.04"
         php-version:
           - "7.2"
           - "7.3"
@@ -35,7 +35,7 @@ jobs:
           - "highest"
         include:
           - deps: "lowest"
-            os: "ubuntu-16.04"
+            os: "ubuntu-18.04"
             php-version: "7.2"
             mongodb-version: "3.6"
             driver-version: "1.5.0"