diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for staversion
 
+## 0.2.3.3  -- 2020-01-02
+
+* Confirm test with `megaparsec-8.0.0` and `base-4.13`.
+
 ## 0.2.3.2  -- 2019-10-05
 
 * Support the following major versions of dependencies.
diff --git a/staversion.cabal b/staversion.cabal
--- a/staversion.cabal
+++ b/staversion.cabal
@@ -1,5 +1,5 @@
 name:                   staversion
-version:                0.2.3.2
+version:                0.2.3.3
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -56,7 +56,7 @@
                         Staversion.Internal.HTTP,
                         Staversion.Internal.Megaparsec,
                         Staversion.Internal.EIO
-  build-depends:        base >=4.8 && <4.13,
+  build-depends:        base >=4.8 && <4.14,
                         unordered-containers >=0.2.3 && <0.3,
                         aeson >=0.8.0 && <1.5,
                         text >=0.11.3 && <1.3,
@@ -71,7 +71,7 @@
                         http-types >=0.8.6 && <0.13,
                         transformers >=0.3.0 && <0.6,
                         transformers-compat >=0.4.0 && <0.7,
-                        megaparsec >=4.2.0 && <7.1,
+                        megaparsec >=4.2.0 && <8.1,
                         semigroups >=0.18.0.1 && <0.20,
                         Cabal >=1.22.6.0 && <3.1,
                         pretty >=1.1.2.0 && <1.2,
