diff --git a/app/javascript/flavours/glitch/styles/components/modal.scss b/app/javascript/flavours/glitch/styles/components/modal.scss
index f5acd814e02..671323bc543 100644
--- a/app/javascript/flavours/glitch/styles/components/modal.scss
+++ b/app/javascript/flavours/glitch/styles/components/modal.scss
@@ -14,6 +14,7 @@
   right: 0;
   bottom: 0;
   background: rgba($base-overlay-background, 0.7);
+  transition: background 0.5s;
 }
 
 .modal-root__container {