diff --git a/pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix b/pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix
index 5c01453cb27..a65bc28ec40 100644
--- a/pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix
+++ b/pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "dovecot-pigeonhole";
-  version = "0.5.11";
+  version = "0.5.13";
 
   src = fetchurl {
     url = "https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-${version}.tar.gz";
-    sha256 = "1w5mryv6izh1gv7davnl94rb0pvh5bxl2bydzbfla1b83x22m5qb";
+    sha256 = "05xz2d82ck6lmv94nbc3qff09j8b60a5640i3fmqwqsvv9kfa7wi";
   };
 
   buildInputs = [ dovecot openssl ];