diff --git a/hokey.hs b/hokey.hs
--- a/hokey.hs
+++ b/hokey.hs
@@ -192,7 +192,7 @@
    ( linebreak <> text "Key has potential validity:" <+> text (keyStatus keyReport)
   <> linebreak <> text "Key has fingerprint:" <+> text (show (keyFingerprint keyReport))
   <> linebreak <> text "Checking to see if key is OpenPGPv4:" <+> coloredToColor (text . show) (keyVer keyReport)
-  <> linebreak <> (\kas -> text "Checking to see if key is RSA or DSA (>= 2048-bit):" <+> coloredToColor (text . show) (pubkeyalgo kas) <+> coloredToColor (text . show) (pubkeysize kas)) (keyAlgorithmAndSize keyReport)
+  <> linebreak <> (\kas -> text "Checking to see if key is RSA or DSA (>= 2048-bit):" <+> coloredToColor (text . show) (pubkeyalgo kas) <+> coloredToColor (text . maybe "unknown" show) (pubkeysize kas)) (keyAlgorithmAndSize keyReport)
   <> linebreak <> text "Checking user-ID- and user-attribute-related items:"
   <> mconcat (map (uidtrip (keyCreationTime keyReport)) (unFakeMap (keyUIDsAndUAts keyReport)))
   <> linebreak
diff --git a/hopenpgp-tools.cabal b/hopenpgp-tools.cabal
--- a/hopenpgp-tools.cabal
+++ b/hopenpgp-tools.cabal
@@ -1,5 +1,5 @@
 name:                hopenpgp-tools
-version:             0.4.1
+version:             0.5
 synopsis:            hOpenPGP-based command-line tools
 description:         command-line tools for performing some OpenPGP-related operations
 homepage:            http://floss.scru.org/hopenpgp-tools
@@ -23,7 +23,7 @@
                ,       cereal
                ,       cereal-conduit
                ,       conduit
-               ,       hOpenPGP               >= 1.0
+               ,       hOpenPGP               >= 1.0.1
                ,       lens
                ,       openpgp-asciiarmor     >= 0.1
                ,       optparse-applicative   >= 0.7
@@ -48,7 +48,7 @@
                ,       cryptohash             >= 0.7.7
                ,       directory
                ,       errors
-               ,       hOpenPGP               >= 1.0
+               ,       hOpenPGP               >= 1.0.1
                ,       lens
                ,       old-locale
                ,       optparse-applicative   >= 0.5.0
@@ -71,7 +71,7 @@
                ,       conduit
                ,       crypto-pubkey
                ,       directory
-               ,       hOpenPGP               >= 1.0
+               ,       hOpenPGP               >= 1.0.1
                ,       ixset
                ,       lens
                ,       optparse-applicative   >= 0.5.0
@@ -86,4 +86,4 @@
 source-repository this
   type:     git
   location: git://git.debian.org/users/clint/hopenpgp-tools.git
-  tag:      hopenpgp-tools/0.4.1
+  tag:      hopenpgp-tools/0.5