diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 3dd8c21..cafca06 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -9,12 +9,10 @@ on:
 jobs:
   ubuntu:
     runs-on: ${{ matrix.os }}
-    env:
-      GOEXPERIMENT: cgocheck2
     strategy:
       matrix:
         os: [ 'ubuntu-20.04', 'ubuntu-22.04' ]
-        go: [ '1.20', '1.21' ]
+        go: [ '1.21' ]
     name: Go ${{ matrix.go }} + GDAL on ${{ matrix.os }} test
     steps:
       - name: APT
@@ -49,8 +47,6 @@ jobs:
   test:
     needs: install-gdal
     runs-on: ubuntu-22.04
-    env:
-      GOEXPERIMENT: cgocheck2
     strategy:
       matrix:
         go: [ '1.20', '1.21' ]