diff --git a/ci/check.sh b/ci/check.sh
index 70a50db..dc80d8f 100755
--- a/ci/check.sh
+++ b/ci/check.sh
@@ -2,5 +2,7 @@
 
 set -eou pipefail
 
+./gradlew --no-daemon clean
+
 GRADLE_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home -Djava.io.tmpdir=/tmp" \
  ./gradlew check --no-daemon --refresh-dependencies --stacktrace