diff --git a/CHANGES.markdown b/CHANGES.markdown
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -1,3 +1,8 @@
+1.1.0.1 (19 March 2014)
+----------------------
+
+    - Allow lens-4.1
+
 1.1 (8 March 2014)
 ------------------
 
diff --git a/diagrams-core.cabal b/diagrams-core.cabal
--- a/diagrams-core.cabal
+++ b/diagrams-core.cabal
@@ -1,5 +1,5 @@
 Name:                diagrams-core
-Version:             1.1
+Version:             1.1.0.1
 Synopsis:            Core libraries for diagrams EDSL
 Description:         The core modules underlying diagrams,
                      an embedded domain-specific language
@@ -44,7 +44,7 @@
                        newtype >= 0.2 && < 0.3,
                        monoid-extras >= 0.3 && < 0.4,
                        dual-tree >= 0.2 && < 0.3,
-                       lens >= 4.0 && < 4.1
+                       lens >= 4.0 && < 4.2
 
   hs-source-dirs:      src