diff --git a/.guix/modules/tiedote-md-package.scm b/.guix/modules/tiedote-md-package.scm
index f48f1ba..38c15ed 100644
--- a/.guix/modules/tiedote-md-package.scm
+++ b/.guix/modules/tiedote-md-package.scm
@@ -471,20 +471,17 @@ representations used for @@Generic1@@ are modified slightly.")
 (define ghc-filestore
   (package
    (name "ghc-filestore")
-   (version "0.6.5")
+   (version "0.6.5.1")
    (source (origin
              (method url-fetch)
              (uri (hackage-uri "filestore" version))
              (sha256
               (base32
-               "0z29273vdqjsrj4vby0gp7d12wg9nkzq9zgqg18db0p5948jw1dh"))))
+               "1m6rav1rcigckakw8ky27lbwh5a9q8xl7nvv358ljykmvyl1j2lc"))))
    (build-system haskell-build-system)
    (properties '((upstream-name . "filestore")))
    (inputs (list ghc-utf8-string ghc-xml ghc-split ghc-diff ghc-old-locale git mercurial))
    (native-inputs (list ghc-hunit))
-   (arguments
-    `(#:cabal-revision ("1"
-                        "1v9xqm0112knv6za05qf310ldndrc0h3xhajgwjaycbzkrknz4n7")))
    (home-page "http://hackage.haskell.org/package/filestore")
    (synopsis "Interface for versioning file stores.")
    (description
diff --git a/channels.scm b/channels.scm
index 76203cb..ae72b9c 100644
--- a/channels.scm
+++ b/channels.scm
@@ -3,7 +3,7 @@
         (url "https://git.savannah.gnu.org/git/guix.git")
         (branch "master")
         (commit
-          "a6fc564bcc32ba599fc701f340c2d59c47bb225b")
+          "b2943f6791d02feda7901c3dc2c777193e664455")
         (introduction
           (make-channel-introduction
             "9edb3f66fd807b096b48283debdcddccfea34bad"