diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9787ebc9..889f456f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -96,7 +96,7 @@ Manifests:
       - manifest-db/generated-image-infos/
   parallel:
     matrix:
-      - PARALLEL_EXEC: ["1/4", "2/4", "3/4", "4/4"]
+      - PARALLEL_EXEC: ["1/8", "2/8", "3/8", "4/8", "5/8", "6/8", "7/8", "8/8"]
         RUNNER:
           - aws/fedora-37-x86_64
           - aws/fedora-37-aarch64
@@ -104,7 +104,7 @@ Manifests:
           - aws/centos-stream-8-aarch64
           - aws/centos-stream-9-x86_64
           - aws/centos-stream-9-aarch64
-      - PARALLEL_EXEC: ["1/4", "2/4", "3/4", "4/4"]
+      - PARALLEL_EXEC: ["1/8", "2/8", "3/8", "4/8", "5/8", "6/8", "7/8", "8/8"]
         RUNNER:
           - aws/rhel-8.8-ga-x86_64
           - aws/rhel-8.8-ga-aarch64