diff --git a/gnu/packages/haskell-crypto.scm b/gnu/packages/haskell-crypto.scm
index 9501fb2c39..c45d23b076 100644
--- a/gnu/packages/haskell-crypto.scm
+++ b/gnu/packages/haskell-crypto.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2015, 2017 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2016 ng0 <ng0@infotropique.org>
 ;;; Copyright © 2017 rsiddharth <s@ricketyspace.net>
+;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -56,7 +57,7 @@ (define-public ghc-asn1-types
 (define-public ghc-asn1-encoding
   (package
     (name "ghc-asn1-encoding")
-    (version "0.9.3")
+    (version "0.9.5")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://hackage.haskell.org/package/"
@@ -64,7 +65,7 @@ (define-public ghc-asn1-encoding
                                   version ".tar.gz"))
               (sha256
                (base32
-                "01ki5msrpccgdbdiaaa5a9zw0icp1hki4hca8qx6hzlp0rcf1mwh"))))
+                "0adgbamyq0mj1l1hdq4zyyllay714bac1wl0rih3fv1z6vykp1hy"))))
     (build-system haskell-build-system)
     (inputs
      `(("ghc-hourglass" ,ghc-hourglass)