diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6863fc80..1ba45c4b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -221,6 +221,7 @@ test_bullseye_latestphp:
     - su postgres -c 'createuser testrunner --superuser'
     - pg_ctlcluster 13 main restart
     - a2enmod rewrite
+    - a2dismod -f deflate
     - apache2ctl start
     - useradd testrunner
     - cd testing && su testrunner -c 'IS_CI=yes ALLSUITES="regression-suite binding carddav scheduling" ./run_regressions.sh all x'