diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 84b6fa0e76..075fce0d52 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -1754,7 +1754,7 @@ facilities for checking incoming mail.")
   (package
     (name "dovecot")
     ;; Also update dovecot-pigeonhole when updating to a new minor version.
-    (version "2.3.11.3")
+    (version "2.3.13")
     (source
      (origin
        (method url-fetch)
@@ -1762,7 +1762,7 @@ facilities for checking incoming mail.")
                            (version-major+minor version) "/"
                            "dovecot-" version ".tar.gz"))
        (sha256
-        (base32 "1p5gp8jbavcsaara5mfn5cbrnlxssajnchczbgmmfzr7228fmnfk"))))
+        (base32 "1i7ijss79a23v7b6lycfzaa8r5rh01k0h0b9h0j4a6n11sw7by53"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))