diff --git a/browser/installer/package-manifest.in b/browser/installer/package-manifest.in
index 1bb7a8dfd9..6049d805d7 100644
--- a/browser/installer/package-manifest.in
+++ b/browser/installer/package-manifest.in
@@ -374,8 +374,6 @@
 @RESPATH@/browser/components/devtools-startup.js
 @RESPATH@/browser/components/webideCli.js
 @RESPATH@/browser/components/webideComponents.manifest
-@RESPATH@/browser/components/Experiments.manifest
-@RESPATH@/browser/components/ExperimentsService.js
 @RESPATH@/browser/components/browser-newtab.xpt
 @RESPATH@/browser/components/aboutNewTabService.js
 @RESPATH@/browser/components/NewTabComponents.manifest