diff --git a/Clckwrks/Bugs/Types.hs b/Clckwrks/Bugs/Types.hs
--- a/Clckwrks/Bugs/Types.hs
+++ b/Clckwrks/Bugs/Types.hs
@@ -6,20 +6,38 @@
 import Data.Data           (Data, Typeable)
 import Data.IxSet          (Indexable(..), ixSet, ixFun)
 import Data.Maybe          (maybeToList)
-import Data.SafeCopy       (SafeCopy, Migrate(..), base, deriveSafeCopy, extension)
+import Data.SafeCopy       (SafeCopy(..), Migrate(..), base, contain, deriveSafeCopy, extension, safeGet, safePut)
+import qualified Data.Serialize as S
 import Data.Text           (Text)
+import qualified Data.Text.Encoding as T
 import Data.Time           (UTCTime)
 import Data.Set            (Set)
 import Web.Routes          (PathInfo(..))
 
 newtype BugId = BugId { unBugId :: Integer }
-    deriving (Eq, Ord, Read, Show, Data, Typeable, SafeCopy, PathInfo)
+    deriving (Eq, Ord, Read, Show, Data, Typeable, PathInfo)
 
+instance SafeCopy BugId where
+    getCopy = contain $ fmap BugId S.get
+    putCopy = contain . S.put . unBugId
+    errorTypeName _ = "BugId"
+
 newtype BugTag = BugTag { tagText :: Text }
-    deriving (Eq, Ord, Read, Show, Data, Typeable, SafeCopy, PathInfo)
+    deriving (Eq, Ord, Read, Show, Data, Typeable, PathInfo)
 
+instance SafeCopy BugTag where
+    kind = base
+    getCopy = contain $ (BugTag . T.decodeUtf8) <$> safeGet
+    putCopy = contain . safePut . T.encodeUtf8 . tagText
+    errorTypeName _ = "BugTag"
+
 newtype MilestoneId = MilestoneId { unMilestoneId :: Integer }
-    deriving (Eq, Ord, Read, Show, Data, Typeable, SafeCopy, PathInfo, Enum)
+    deriving (Eq, Ord, Read, Show, Data, Typeable, PathInfo, Enum)
+
+instance SafeCopy MilestoneId where
+    getCopy = contain $ fmap MilestoneId S.get
+    putCopy = contain . S.put . unMilestoneId
+    errorTypeName _ = "MilestoneId"
 
 data Milestone = Milestone
     { milestoneId      :: MilestoneId
diff --git a/clckwrks-plugin-bugs.cabal b/clckwrks-plugin-bugs.cabal
--- a/clckwrks-plugin-bugs.cabal
+++ b/clckwrks-plugin-bugs.cabal
@@ -1,5 +1,5 @@
 Name:                clckwrks-plugin-bugs
-Version:             0.7.1
+Version:             0.7.2
 Synopsis:            bug tracking plugin for clckwrks
 Homepage:            http://clckwrks.com/
 License:             BSD3
@@ -46,6 +46,7 @@
     attoparsec             >= 0.10 && < 0.12,
     clckwrks               >= 0.21 && < 0.23,
     clckwrks-plugin-page   == 0.3.*,
+    cereal                 >= 0.4 && < 0.5,
     containers             >= 0.4 && < 0.6,
     directory              >= 1.1 && < 1.3,
     filepath               >= 1.2 && < 1.4,