diff --git a/.buildkite/.env b/.buildkite/.env
index a2969b96a149b03d725a593186b4988b6c0fcf1e..fc3606ead233959bd0458af76d951f5e646c312f 100644
--- a/.buildkite/.env
+++ b/.buildkite/.env
@@ -1,7 +1,6 @@
 CI
 BUILDKITE
 BUILDKITE_BUILD_NUMBER
-BUILDKITE_BRANCH
 BUILDKITE_BUILD_NUMBER
 BUILDKITE_JOB_ID
 BUILDKITE_BUILD_URL
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cd88184488516b9c07ed9eb4ecf04a95f9744281..a04f6abbeddb950e3f15d1ef2059ad3bc1126896 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -195,7 +195,6 @@ jobs:
       volumes:
         - ${{ github.workspace }}:/src
       env:
-        BUILDKITE_BRANCH: ${{ github.head_ref }}
         POSTGRES: ${{ matrix.postgres && 1}}
         MULTI_POSTGRES: ${{ (matrix.postgres == 'multi-postgres') && 1}}
         WORKERS: ${{ matrix.workers && 1 }}