diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index cb64cc45b34c..c892025935ff 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -84,8 +84,8 @@ rec {
   thunderbird = thunderbird-latest;
 
   thunderbird-latest = common {
-    version = "154.0";
-    sha512 = "aebdc5f0f4788124128a77b8a329767fa0f6d1d46c41ca6fd45889368e4e964a7a82a41f5367e825da0d544eff61d4da07dff2e6eb13f72c935bed79a184c5a8";
+    version = "155.0";
+    sha512 = "fe0247ac50d2741a49517fabe729dc990a66e7044f450e4fe6871b663096bcd15f22ed83eea0557106d38eee34e464fead5a7567d0906995ff2a945fae64b60c";
 
     updateScript = callPackage ./update.nix {
       attrPath = "thunderbirdPackages.thunderbird-latest";