diff --git a/test/spec-tests/ci/run-spec-tests.sh b/test/spec-tests/ci/run-spec-tests.sh
index 9a1e304d0..993149163 100755
--- a/test/spec-tests/ci/run-spec-tests.sh
+++ b/test/spec-tests/ci/run-spec-tests.sh
@@ -2,7 +2,7 @@
 set -x
 cd "$(dirname "$0")"
 
-(cd ../bundler-spec-tests && pdm run update-deps)
+(cd ../bundler-spec-tests && pdm install && pdm run update-deps)
 
 (cd ../bundler-spec-tests && pdm run test --launcher-script=../launchers/rundler-launcher/rundler-launcher.sh $@)