diff --git a/run-docker-testsuite.sh b/run-docker-testsuite.sh
index c5e50d1..b48cd0b 100644
--- a/run-docker-testsuite.sh
+++ b/run-docker-testsuite.sh
@@ -1,5 +1,9 @@
-docker run -d -v .:/root --name cloudobjects-sdk-test cloudobjects/php-build-base:8.4
-docker exec -t cloudobjects-sdk-test bash -c "cd /root && composer install"
-docker exec -t cloudobjects-sdk-test bash -c "cd /root && vendor/bin/phpunit"
-docker stop cloudobjects-sdk-test
-docker rm cloudobjects-sdk-test
\ No newline at end of file
+#!/bin/bash
+
+for version in 8.3 8.4; do
+    docker run -d -v .:/root --name cloudobjects-sdk-test cloudobjects/php-build-base:$version
+    docker exec -t cloudobjects-sdk-test bash -c "cd /root && composer install"
+    docker exec -t cloudobjects-sdk-test bash -c "cd /root && vendor/bin/phpunit"
+    docker stop cloudobjects-sdk-test
+    docker rm cloudobjects-sdk-test
+done