diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,12 @@
+5.2.7
+  - lens and deepseq constraint bump + misc
+      - Thanks ethercrow
+      - https://github.com/coreyoconnor/vty/pull/66
+
 5.2.6
   - lens constraint bump
+      - Thanks alexander-b!
+      - https://github.com/coreyoconnor/vty/pull/64
 
 5.2.5
   - lens and random version constraint bump.
diff --git a/Demo.hs b/Demo.hs
--- a/Demo.hs
+++ b/Demo.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE FlexibleContexts #-}
+
 module Main where
 
 import Graphics.Vty
diff --git a/dist/build/verify-attribute-opsStub/verify-attribute-opsStub-tmp/verify-attribute-opsStub.hs b/dist/build/verify-attribute-opsStub/verify-attribute-opsStub-tmp/verify-attribute-opsStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-attribute-opsStub/verify-attribute-opsStub-tmp/verify-attribute-opsStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyAttributeOps ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-crop-span-generationStub/verify-crop-span-generationStub-tmp/verify-crop-span-generationStub.hs b/dist/build/verify-crop-span-generationStub/verify-crop-span-generationStub-tmp/verify-crop-span-generationStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-crop-span-generationStub/verify-crop-span-generationStub-tmp/verify-crop-span-generationStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyCropSpanGeneration ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-display-attributesStub/verify-display-attributesStub-tmp/verify-display-attributesStub.hs b/dist/build/verify-display-attributesStub/verify-display-attributesStub-tmp/verify-display-attributesStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-display-attributesStub/verify-display-attributesStub-tmp/verify-display-attributesStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyDisplayAttributes ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-empty-image-propsStub/verify-empty-image-propsStub-tmp/verify-empty-image-propsStub.hs b/dist/build/verify-empty-image-propsStub/verify-empty-image-propsStub-tmp/verify-empty-image-propsStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-empty-image-propsStub/verify-empty-image-propsStub-tmp/verify-empty-image-propsStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyEmptyImageProps ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-eval-terminfo-capsStub/verify-eval-terminfo-capsStub-tmp/verify-eval-terminfo-capsStub.hs b/dist/build/verify-eval-terminfo-capsStub/verify-eval-terminfo-capsStub-tmp/verify-eval-terminfo-capsStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-eval-terminfo-capsStub/verify-eval-terminfo-capsStub-tmp/verify-eval-terminfo-capsStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyEvalTerminfoCaps ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-image-opsStub/verify-image-opsStub-tmp/verify-image-opsStub.hs b/dist/build/verify-image-opsStub/verify-image-opsStub-tmp/verify-image-opsStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-image-opsStub/verify-image-opsStub-tmp/verify-image-opsStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyImageOps ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-image-transStub/verify-image-transStub-tmp/verify-image-transStub.hs b/dist/build/verify-image-transStub/verify-image-transStub-tmp/verify-image-transStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-image-transStub/verify-image-transStub-tmp/verify-image-transStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyImageTrans ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-inlineStub/verify-inlineStub-tmp/verify-inlineStub.hs b/dist/build/verify-inlineStub/verify-inlineStub-tmp/verify-inlineStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-inlineStub/verify-inlineStub-tmp/verify-inlineStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyInline ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-layers-span-generationStub/verify-layers-span-generationStub-tmp/verify-layers-span-generationStub.hs b/dist/build/verify-layers-span-generationStub/verify-layers-span-generationStub-tmp/verify-layers-span-generationStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-layers-span-generationStub/verify-layers-span-generationStub-tmp/verify-layers-span-generationStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyLayersSpanGeneration ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-parse-terminfo-capsStub/verify-parse-terminfo-capsStub-tmp/verify-parse-terminfo-capsStub.hs b/dist/build/verify-parse-terminfo-capsStub/verify-parse-terminfo-capsStub-tmp/verify-parse-terminfo-capsStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-parse-terminfo-capsStub/verify-parse-terminfo-capsStub-tmp/verify-parse-terminfo-capsStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyParseTerminfoCaps ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-simple-span-generationStub/verify-simple-span-generationStub-tmp/verify-simple-span-generationStub.hs b/dist/build/verify-simple-span-generationStub/verify-simple-span-generationStub-tmp/verify-simple-span-generationStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-simple-span-generationStub/verify-simple-span-generationStub-tmp/verify-simple-span-generationStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifySimpleSpanGeneration ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-terminalStub/verify-terminalStub-tmp/verify-terminalStub.hs b/dist/build/verify-terminalStub/verify-terminalStub-tmp/verify-terminalStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-terminalStub/verify-terminalStub-tmp/verify-terminalStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyOutput ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-using-mock-terminalStub/verify-using-mock-terminalStub-tmp/verify-using-mock-terminalStub.hs b/dist/build/verify-using-mock-terminalStub/verify-using-mock-terminalStub-tmp/verify-using-mock-terminalStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-using-mock-terminalStub/verify-using-mock-terminalStub-tmp/verify-using-mock-terminalStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyUsingMockTerminal ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/dist/build/verify-utf8-widthStub/verify-utf8-widthStub-tmp/verify-utf8-widthStub.hs b/dist/build/verify-utf8-widthStub/verify-utf8-widthStub-tmp/verify-utf8-widthStub.hs
new file mode 100644
--- /dev/null
+++ b/dist/build/verify-utf8-widthStub/verify-utf8-widthStub-tmp/verify-utf8-widthStub.hs
@@ -0,0 +1,5 @@
+module Main ( main ) where
+import Distribution.Simple.Test.LibV09 ( stubMain )
+import VerifyUtf8Width ( tests )
+main :: IO ()
+main = stubMain tests
diff --git a/vty.cabal b/vty.cabal
--- a/vty.cabal
+++ b/vty.cabal
@@ -1,5 +1,5 @@
 name:                vty
-version:             5.2.6
+version:             5.2.7
 license:             BSD3
 license-file:        LICENSE
 author:              AUTHORS
@@ -47,10 +47,10 @@
                        bytestring,
                        containers,
                        data-default >= 0.5.3,
-                       deepseq >= 1.1 && < 1.4,
+                       deepseq >= 1.1 && < 1.5,
                        directory,
                        filepath >= 1.0 && < 2.0,
-                       lens >= 3.9.0.2 && < 4.7,
+                       lens >= 3.9.0.2 && < 4.8,
                        -- required for nice installation with yi
                        hashable >= 1.2,
                        mtl >= 1.1.1.0 && < 2.3,