diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.6.2
+
+* Use `PasswordStore` from `yesod-auth` instead of `pwstore-fast` (uses `cryptonite` instead of `cryptohash`)
+
 ## 1.6.1
 
 * Relax upper bound on persistent
diff --git a/Yesod/Auth/HashDB.hs b/Yesod/Auth/HashDB.hs
--- a/Yesod/Auth/HashDB.hs
+++ b/Yesod/Auth/HashDB.hs
@@ -69,7 +69,7 @@
 -- password hash as follows:
 --
 -- > ghci -XOverloadedStrings
--- > > import Crypto.PasswordStore
+-- > > import Yesod.Auth.Util.PasswordStore
 -- > > makePassword "MyPassword" 17
 --
 -- where \"17\" is the default strength parameter ('defaultStrength') used
@@ -169,7 +169,7 @@
 #if __GLASGOW_HASKELL__ < 710
 import           Control.Applicative         ((<$>), (<*>), pure)
 #endif
-import           Crypto.PasswordStore        (makePassword, strengthenPassword,
+import           Yesod.Auth.Util.PasswordStore (makePassword, strengthenPassword,
                                               verifyPassword, passwordStrength)
 import           Data.Aeson                  ((.:?))
 import qualified Data.ByteString.Char8 as BS (pack, unpack)
@@ -186,8 +186,8 @@
 defaultCsrfParamName = "_token"
 #endif
 
--- | Default strength used for passwords (see "Crypto.PasswordStore" for
---   details).
+-- | Default strength used for passwords (see "Yesod.Auth.Util.PasswordStore"
+--   for details).
 defaultStrength :: Int
 defaultStrength = 17
 
@@ -209,7 +209,7 @@
     {-# MINIMAL userPasswordHash, setPasswordHash #-}
 
 
--- | Calculate a new-style password hash using "Crypto.PasswordStore".
+-- | Calculate a new-style password hash using "Yesod.Auth.Util.PasswordStore".
 passwordHash :: MonadIO m => Int -> Text -> m Text
 passwordHash strength pwd = do
     h <- liftIO $ makePassword (BS.pack $ unpack pwd) strength
diff --git a/stack.yaml b/stack.yaml
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,5 @@
-resolver: lts-6.6
+resolver: lts-8.24
 packages: 
 - .
-extra-deps: []
+extra-deps:
+- yesod-auth-1.4.18
diff --git a/yesod-auth-hashdb.cabal b/yesod-auth-hashdb.cabal
--- a/yesod-auth-hashdb.cabal
+++ b/yesod-auth-hashdb.cabal
@@ -1,5 +1,5 @@
 name:            yesod-auth-hashdb
-version:         1.6.1
+version:         1.6.2
 license:         MIT
 license-file:    LICENSE
 author:          Patrick Brisbin, later changes Paul Rouse
@@ -35,12 +35,11 @@
     build-depends:   base                    >= 4          && < 5
                    , bytestring              >= 0.9.1.4
                    , yesod-core              >= 1.4        && < 1.5
-                   , yesod-auth              >= 1.4        && < 1.5
+                   , yesod-auth              >= 1.4.18     && < 1.5
                    , text                    >= 0.7
                    , yesod-persistent        >= 1.2
                    , persistent              >= 2.1        && < 2.8
                    , yesod-form              >= 1.4        && < 1.5
-                   , pwstore-fast            >= 2.2
                    , aeson
 
     exposed-modules: Yesod.Auth.HashDB