diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@
 
 ## Unreleased
 
+## 0.6.2.1
+
 ## 0.6.2.0
 
 ## 0.6.1.0
diff --git a/waterfall-cad-svg.cabal b/waterfall-cad-svg.cabal
--- a/waterfall-cad-svg.cabal
+++ b/waterfall-cad-svg.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           waterfall-cad-svg
-version:        0.6.2.0
+version:        0.6.2.1
 synopsis:       Declarative CAD/Solid Modeling Library, SVG Support
 description:    Please see the README on GitHub at <https://github.com/joe-warren/opencascade-hs#readme>
 category:       Graphics
@@ -42,9 +42,9 @@
     , base >=4.7 && <5
     , lens ==5.*
     , linear >=1.0 && <2
-    , opencascade-hs >=0.6.2.0 && <0.7
+    , opencascade-hs >=0.6.2.1 && <0.7
     , resourcet >=1.2 && <1.4
     , svg-tree >=0.6 && <1
     , text >=1.2 && <3
-    , waterfall-cad >=0.6.2.0 && <0.7
+    , waterfall-cad >=0.6.2.1 && <0.7
   default-language: Haskell2010