diff --git a/pkgs/applications/networking/mailreaders/betterbird/default.nix b/pkgs/applications/networking/mailreaders/betterbird/default.nix
index d08bd5dfcc4a..42ea0d150a20 100644
--- a/pkgs/applications/networking/mailreaders/betterbird/default.nix
+++ b/pkgs/applications/networking/mailreaders/betterbird/default.nix
@@ -12,13 +12,13 @@
 let
   thunderbird-unwrapped = thunderbirdPackages.thunderbird-102;
 
-  version = "102.12.0";
+  version = "102.15.1";
   majVer = lib.versions.major version;
 
   betterbird-patches = fetchFromGitHub {
     owner = "Betterbird";
     repo = "thunderbird-patches";
-    rev = "${version}-bb37";
+    rev = "${version}-bb41";
     postFetch = ''
       echo "Retrieving external patches"
 
@@ -36,7 +36,7 @@ let
       . ./external.sh
       rm external.sh
     '';
-    sha256 = "sha256-LH0dgWqariutfaOCPIUZrHzZ8oCbZF1VaaKQIQS4aL8=";
+    hash = "sha256-fP763ec4B8LbivzmYHzQ4j39QMxWrymqI8chXfF3KX8=";
   };
 in ((buildMozillaMach {
   pname = "betterbird";
@@ -49,7 +49,7 @@ in ((buildMozillaMach {
   src = fetchurl {
     # https://download.cdn.mozilla.net/pub/thunderbird/releases/
     url = "mirror://mozilla/thunderbird/releases/${version}/source/thunderbird-${version}.source.tar.xz";
-    sha512 = "303787a8f22a204e48784d54320d5f4adaeeeedbe4c2294cd26ad75792272ffc9453be7f0ab1434214b61a2cc46982c23c4fd447c4d80d588df4a7800225ddee";
+    hash = "sha256-og1Tu7PAHOqGs02jkHU291BCGuKDy1J+72v4Gsu4oDg=";
   };
 
   extraPostPatch = thunderbird-unwrapped.extraPostPatch or "" + /* bash */ ''