diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # Revision history for fold-debounce-conduit
 
+## 0.2.0.3  -- 2018-10-01
+
+* Confirm test with `base-4.12.0.0`
+
+
 ## 0.2.0.2  -- 2018-09-23
 
 * Confirm test with `stm-2.5.0.0`.
diff --git a/fold-debounce-conduit.cabal b/fold-debounce-conduit.cabal
--- a/fold-debounce-conduit.cabal
+++ b/fold-debounce-conduit.cabal
@@ -1,5 +1,5 @@
 name:                   fold-debounce-conduit
-version:                0.2.0.2
+version:                0.2.0.3
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -20,7 +20,7 @@
   exposed-modules:      Data.Conduit.FoldDebounce
   -- other-modules:
   default-extensions:   FlexibleContexts
-  build-depends:        base >=4.9.0 && <4.12,
+  build-depends:        base >=4.9.0 && <4.13,
                         conduit >=1.3.0 && <1.4,
                         fold-debounce >=0.2.0 && <0.3,
                         resourcet >=1.2.0 && <1.3,