diff --git a/pkgs/applications/networking/mailreaders/notmuch/default.nix b/pkgs/applications/networking/mailreaders/notmuch/default.nix
index dbbfddcb2c01..2a95453f7ae3 100644
--- a/pkgs/applications/networking/mailreaders/notmuch/default.nix
+++ b/pkgs/applications/networking/mailreaders/notmuch/default.nix
@@ -11,11 +11,11 @@
 
 stdenv.mkDerivation rec {
   pname = "notmuch";
-  version = "0.34.2";
+  version = "0.34.3";
 
   src = fetchurl {
     url = "https://notmuchmail.org/releases/notmuch-${version}.tar.xz";
-    sha256 = "wfLO7kf2iXESItcgWvKj/npKnYwy5OCyStZviN9qR9M=";
+    sha256 = "sha256-P+kQSDv9gVpcO5UOImp7yoFWBT/TLXrR6xoKijrK6Ig=";
   };
 
   patches = [