diff --git a/ci/scripts/regress-test.sh b/ci/scripts/regress-test.sh
index e32eb2c9ad666..aa1ba7836dc57 100755
--- a/ci/scripts/regress-test.sh
+++ b/ci/scripts/regress-test.sh
@@ -30,6 +30,7 @@ mv target/debug/risingwave_regress_test-"$profile" target/debug/risingwave_regre
 chmod +x ./target/debug/risingwave_regress_test
 
 echo "--- Postgres regress test"
+apt-get -y update
 apt-get -y install locales
 locale-gen C
 export LANGUAGE=C