diff --git a/pkgs/applications/networking/mailreaders/thunderbird/default.nix b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
index 2e1f8ed5070..c98ba2d06ad 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/default.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
@@ -22,11 +22,11 @@ let
   wrapperTool = if enableGTK3 then wrapGAppsHook else makeWrapper;
 in stdenv.mkDerivation rec {
   name = "thunderbird-${version}";
-  version = "52.4.0";
+  version = "52.5.0";
 
   src = fetchurl {
     url = "mirror://mozilla/thunderbird/releases/${version}/source/thunderbird-${version}.source.tar.xz";
-    sha512 = "6ac39cecca9e53b51754d7a8bd7cae228d197eb234b03a2386c16fd665f4f7a67f10bbdf981c20b3f7a21a5ef67e2771154a3dd9f249c6a884c48a9e59bcfc78";
+    sha512 = "b9b599e5853887bd518e5a57f6fd04751bb78f553f97b260cd9ba7268c4cff307be40b81b00f1320f5a5156e5c67115595b2d389f931c265d0c3448f56fb8319";
   };
 
   # New sed no longer tolerates this mistake.