diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index 1ba3c40ea98b..c9cc9f901a33 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -10,12 +10,12 @@ in
 rec {
   thunderbird = common rec {
     pname = "thunderbird";
-    version = "91.4.1";
+    version = "91.5.0";
     application = "comm/mail";
     binaryName = pname;
     src = fetchurl {
       url = "mirror://mozilla/thunderbird/releases/${version}/source/thunderbird-${version}.source.tar.xz";
-      sha512 = "aa442ef886277f5091ebadff907a29451a0ee6542f24adb5c1fb4223193d719c2cb01474d3ccd96067695b19ce3cbf042893b0beaaeb7c65e0660ab5072bf82e";
+      sha512 = "e1cafbd99e67e8fef346e936890a22aeadded4aa8be604607535ae933251bc1b2a3b56c2b62045b3d37ecb09999adb746157df188d1a32dfe75685f3af959b7d";
     };
     patches = [
       # The file to be patched is different from firefox's `no-buildconfig-ffx90.patch`.