diff --git a/.changeset/neat-poems-flow.md b/.changeset/neat-poems-flow.md
new file mode 100644
index 00000000..3f5bdd08
--- /dev/null
+++ b/.changeset/neat-poems-flow.md
@@ -0,0 +1,5 @@
+---
+"@primer/css": patch
+---
+
+Adding fill mode forwards to anim-fade-out
diff --git a/src/utilities/animations.scss b/src/utilities/animations.scss
index d4e19208..93d0dfb8 100644
--- a/src/utilities/animations.scss
+++ b/src/utilities/animations.scss
@@ -25,6 +25,7 @@
 .anim-fade-out {
   animation-name: fade-out;
   animation-duration: 1s;
+  animation-fill-mode: forwards;
   animation-timing-function: ease-out;
 
   &.fast {