diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # ChangeLog for hpke
 
+## 0.1.0
+
+* Using "ram" instead of "memory".
+
 ## 0.0.0
 
 * Initial release
diff --git a/hpke.cabal b/hpke.cabal
--- a/hpke.cabal
+++ b/hpke.cabal
@@ -1,6 +1,6 @@
 cabal-version:      >=1.10
 name:               hpke
-version:            0.0.0
+version:            0.1.0
 license:            BSD3
 license-file:       LICENSE
 maintainer:         kazu@iij.ad.jp
@@ -32,8 +32,8 @@
         base >=4.7 && <5,
         base16-bytestring,
         bytestring,
-        crypton >= 1.0.2,
-        memory
+        crypton >= 1.1.0 && <1.2,
+        ram
 
     default-extensions: Strict StrictData