diff --git a/.gitignore b/.gitignore
index 15e62b1..d454c6b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /dist/
+dump/
 .stack-work/
diff --git a/src/Data/Thyme/Clock/TAI.hs b/src/Data/Thyme/Clock/TAI.hs
index 5867c37..0872430 100644
--- a/src/Data/Thyme/Clock/TAI.hs
+++ b/src/Data/Thyme/Clock/TAI.hs
@@ -41,6 +41,9 @@ import Prelude
 #if !MIN_VERSION_base(4,8,0)
 import Control.Applicative
 #endif
+#if __GLASGOW_HASKELL__ < 710
+import Data.Monoid (mappend)
+#endif
 import Control.DeepSeq
 import Control.Lens
 import Control.Monad
@@ -354,4 +357,3 @@ utcToTAITime = view . absoluteTime
 {-# INLINE taiToUTCTime #-}
 taiToUTCTime :: TAIUTCMap -> AbsoluteTime -> UTCTime
 taiToUTCTime = review . absoluteTime
-
diff --git a/src/Data/Thyme/Format.hs b/src/Data/Thyme/Format.hs
index 62bdab7..3f2fe2d 100644
--- a/src/Data/Thyme/Format.hs
+++ b/src/Data/Thyme/Format.hs
@@ -30,6 +30,9 @@ import Control.Applicative
 #if SHOW_INTERNAL
 import Control.Arrow
 #endif
+#if __GLASGOW_HASKELL__ < 710
+import Data.Monoid (mappend)
+#endif
 import Control.Lens
 import Control.Monad.Trans
 import Control.Monad.State.Strict
diff --git a/thyme.cabal b/thyme.cabal
index 170b0eb..1999b86 100644
--- a/thyme.cabal
+++ b/thyme.cabal
@@ -32,7 +32,7 @@ flag bug-for-bug
     manual: True
 
 flag docs
-    description: include extra packages for Data.Thyme.Docs; implies -flens
+    description: include extra packages for Data.Thyme.Docs
     default: False
     manual: True