diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+1.2.1 (Changes from 1.2.0)
+=========================
+* Bump dependency on transformers and mtl
+
 1.2.0 (Changes from 1.1.0)
 =========================
 * Corrected associativity of ^. ^.. and ^? from right to left.
diff --git a/lens-family.cabal b/lens-family.cabal
--- a/lens-family.cabal
+++ b/lens-family.cabal
@@ -1,6 +1,6 @@
 name:               lens-family
 category:           Data, Lenses
-version:            1.2.0
+version:            1.2.1
 license:            BSD3
 cabal-version:      >= 1.6
 license-file:       LICENSE
@@ -34,7 +34,7 @@
   build-depends:
     base                 >= 4       && < 5,
     containers           >= 0.3     && < 0.6,
-    transformers         >= 0.2.0   && < 0.5,
+    transformers         >= 0.2.0   && < 0.6,
     mtl                  >= 2.1     && < 2.3,
     lens-family-core     >= 1.2     && < 1.3