diff --git a/pkgs/applications/networking/browsers/firefox/packages/firefox-devedition.nix b/pkgs/applications/networking/browsers/firefox/packages/firefox-devedition.nix
index 9d56a9493aa5..f0fc2f8514c8 100644
--- a/pkgs/applications/networking/browsers/firefox/packages/firefox-devedition.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages/firefox-devedition.nix
@@ -10,13 +10,13 @@
 buildMozillaMach rec {
   pname = "firefox-devedition";
   binaryName = "firefox-devedition";
-  version = "148.0b14";
+  version = "148.0b15";
   applicationName = "Firefox Developer Edition";
   requireSigning = false;
   branding = "browser/branding/aurora";
   src = fetchurl {
     url = "mirror://mozilla/devedition/releases/${version}/source/firefox-${version}.source.tar.xz";
-    sha512 = "10de6926c3c20fcbffe2f25f97213ac777e4ce3984cb303262ddaef15be24788a40c6064ce8cc138ab3a35ba621efdcd0f6e0a105b2e773f7f14a1d661c10693";
+    sha512 = "32d7e4b9df739d5bdab2cd54250b1c7546d26b248a62e0bbc71e4b78b12d4e3d6d9451b631a0f18568f2540141786967a33b6543256a6ec6f4f245093d37a5d5";
   };
 
   # buildMozillaMach sets MOZ_APP_REMOTINGNAME during configuration, but