diff --git a/pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix b/pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix
index 4184771f8a8..71a5c20dea3 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 = "0.5.8";
+  version = "0.5.9";
 
   src = fetchurl {
     url = "https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-${version}.tar.gz";
-    sha256 = "08lhfl877xm790f1mqdhvz74xqr2kkl8wpz2m6p0j6hv1kan1f4g";
+    sha256 = "01dxidrnmrr2gqggfsgkfxa6ynvyjyw13xw32gi86yqmwnm6inin";
   };
 
   buildInputs = [ dovecot openssl ];