diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+## [v0.2.0.9](https://github.com/diagrams/active/tree/v0.2.0.9) (2016-05-01)
+
+- allow `lens-4.14`
+
 ## [v0.2.0.8](https://github.com/diagrams/active/tree/v0.2.0.8) (2015-11-10)
 
 - allow `semigroups-0.18`
diff --git a/active.cabal b/active.cabal
--- a/active.cabal
+++ b/active.cabal
@@ -1,5 +1,5 @@
 name:                active
-version:             0.2.0.8
+version:             0.2.0.9
 synopsis:            Abstractions for animation
 description:         "Active" abstraction for animated things with finite start and end times.
 license:             BSD3
@@ -20,11 +20,11 @@
 
 library
   exposed-modules:     Data.Active
-  build-depends:       base >= 4.0 && < 4.9,
+  build-depends:       base >= 4.0 && < 4.10,
                        vector >= 0.10,
                        semigroups >= 0.1 && < 0.19,
                        semigroupoids >= 1.2 && < 5.1,
-                       lens >= 4.0 && < 4.14,
+                       lens >= 4.0 && < 4.15,
                        linear >= 1.14 && < 1.21
   hs-source-dirs:      src
   default-language:    Haskell2010
@@ -32,11 +32,11 @@
 test-suite active-tests
     type:              exitcode-stdio-1.0
     main-is:           active-tests.hs
-    build-depends:     base >= 4.0 && < 4.9,
+    build-depends:     base >= 4.0 && < 4.10,
                        vector >= 0.10,
                        semigroups >= 0.1 && < 0.19,
                        semigroupoids >= 1.2 && < 5.1,
-                       lens >= 4.0 && < 4.14,
+                       lens >= 4.0 && < 4.15,
                        linear >= 1.14 && < 1.21,
                        QuickCheck >= 2.4.2 && < 2.9
     hs-source-dirs:    src, test
diff --git a/src/Data/Active.hs b/src/Data/Active.hs
--- a/src/Data/Active.hs
+++ b/src/Data/Active.hs
@@ -23,7 +23,7 @@
 -- Inspired by the work of Kevin Matlage and Andy Gill (/Every/
 -- /Animation Should Have a Beginning, a Middle, and an End/, Trends
 -- in Functional Programming,
--- 2010. <http://ittc.ku.edu/csdl/fpg/node/46>), this module defines a
+-- 2010. <http://ku-fpg.github.io/files/Matlage-10-BeginningMiddleEnd.pdf>), this module defines a
 -- simple abstraction for working with time-varying values.  A value
 -- of type @Active a@ is either a constant value of type @a@, or a
 -- time-varying value of type @a@ (/i.e./ a function from time to