diff --git a/yesod-core/ChangeLog.md b/yesod-core/ChangeLog.md
index edcb7e07..45793963 100644
--- a/yesod-core/ChangeLog.md
+++ b/yesod-core/ChangeLog.md
@@ -1,6 +1,6 @@
 # ChangeLog for yesod-core
 
-## 1.7.0
+## 1.6.20
 
 * Generate CSRF tokens using a secure entropy source [#1726](https://github.com/yesodweb/yesod/pull/1726)
 * Change semantics of `yreGen` and `defaultGen`
diff --git a/yesod-core/src/Yesod/Core/Dispatch.hs b/yesod-core/src/Yesod/Core/Dispatch.hs
index 959aaae3..8a2501e6 100644
--- a/yesod-core/src/Yesod/Core/Dispatch.hs
+++ b/yesod-core/src/Yesod/Core/Dispatch.hs
@@ -96,9 +96,9 @@ toWaiAppPlain site = do
 -- | Generate a random number uniformly distributed in the full range
 -- of 'Int'.
 --
--- Note: Before 1.7.0, this generates pseudo-random number in an
+-- Note: Before 1.6.20, this generates pseudo-random number in an
 -- unspecified range. The range size may not be a power of 2. Since
--- 1.7.0, this uses a secure entropy source and generates in the full
+-- 1.6.20, this uses a secure entropy source and generates in the full
 -- range of 'Int'.
 defaultGen :: IO Int
 defaultGen = bsToInt <$> getEntropy bytes
diff --git a/yesod-core/src/Yesod/Core/Types.hs b/yesod-core/src/Yesod/Core/Types.hs
index 322dce0a..11a55f1a 100644
--- a/yesod-core/src/Yesod/Core/Types.hs
+++ b/yesod-core/src/Yesod/Core/Types.hs
@@ -199,9 +199,9 @@ data YesodRunnerEnv site = YesodRunnerEnv
     -- ^ Generate a random number uniformly distributed in the full
     -- range of 'Int'.
     --
-    -- Note: Before 1.7.0, the default value generates pseudo-random
+    -- Note: Before 1.6.20, the default value generates pseudo-random
     -- number in an unspecified range. The range size may not be a power
-    -- of 2. Since 1.7.0, the default value uses a secure entropy source
+    -- of 2. Since 1.6.20, the default value uses a secure entropy source
     -- and generates in the full range of 'Int'.
     , yreGetMaxExpires  :: !(IO Text)
     }
diff --git a/yesod-core/yesod-core.cabal b/yesod-core/yesod-core.cabal
index b37a05ba..1c258f15 100644
--- a/yesod-core/yesod-core.cabal
+++ b/yesod-core/yesod-core.cabal
@@ -1,5 +1,5 @@
 name:            yesod-core
-version:         1.7.0
+version:         1.6.20
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>