diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 2c06dd56c..e4eb4a5e2 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -23,7 +23,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-20.04, ubuntu-18.04]
+        os: [ubuntu-20.04]
         qbt_gui: ["GUI=ON", "GUI=OFF"]
       fail-fast: false