diff --git a/src/main/scss/components/_app-bar.scss b/src/main/scss/components/_app-bar.scss
index 6e5afc8e6b..6512fe61b5 100644
--- a/src/main/scss/components/_app-bar.scss
+++ b/src/main/scss/components/_app-bar.scss
@@ -131,6 +131,7 @@ $bottom-app-bar-padding: 0.875rem;
     var(--background)
   );
   border-top: var(--jenkins-border-width) solid var(--jenkins-border-color);
+  z-index: 997;
 
   &::after {
     content: "";