diff --git a/autotest.sh b/autotest.sh
index 09b983bbfa29707bbf780abb1705e13de6070f8a..81123b40567267803a8ac14e1f3f8fd00428da8e 100755
--- a/autotest.sh
+++ b/autotest.sh
@@ -61,7 +61,8 @@ else
 fi
 
 if ! [ -x "$PHPUNIT" ]; then
-	echo "phpunit executable not found, please install phpunit version >= 9.0" >&2
+	echo "phpunit executable not found, please install phpunit version >= 9.0 manually or via:" >&2
+	echo "  cd build/integration && composer install" >&2
 	exit 3
 fi
 
@@ -76,8 +77,8 @@ PHPUNIT_VERSION=$($PHPUNIT --version | cut -d" " -f2)
 PHPUNIT_MAJOR_VERSION=$(echo "$PHPUNIT_VERSION" | cut -d"." -f1)
 PHPUNIT_MINOR_VERSION=$(echo "$PHPUNIT_VERSION" | cut -d"." -f2)
 
-if ! [ "$PHPUNIT_MAJOR_VERSION" -gt 6 -o \( "$PHPUNIT_MAJOR_VERSION" -eq 6 -a "$PHPUNIT_MINOR_VERSION" -ge 5 \) ]; then
-	echo "phpunit version >= 6.5 required. Version found: $PHPUNIT_VERSION" >&2
+if ! [ "$PHPUNIT_MAJOR_VERSION" -gt 6 -o \( "$PHPUNIT_MAJOR_VERSION" -eq 9 -a "$PHPUNIT_MINOR_VERSION" -ge 0 \) ]; then
+	echo "phpunit version >= 9.0 required. Version found: $PHPUNIT_VERSION" >&2
 	exit 4
 fi