diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for net-spider-rpl
 
+## 0.4.1.5  -- 2022-01-02
+
+* Confirm test with `base-4.15`
+
 ## 0.4.1.4  -- 2020-12-30
 
 * Confirm test with `greskell-1.2.0.0`
diff --git a/net-spider-rpl.cabal b/net-spider-rpl.cabal
--- a/net-spider-rpl.cabal
+++ b/net-spider-rpl.cabal
@@ -1,5 +1,5 @@
 name:                   net-spider-rpl
-version:                0.4.1.4
+version:                0.4.1.5
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -33,7 +33,7 @@
                         NetSpider.RPL.ContikiNG,
                         NetSpider.RPL.IPv6
   other-modules:        NetSpider.RPL.JSONUtil
-  build-depends:        base >=4.11.1.0 && <4.15,
+  build-depends:        base >=4.11.1.0 && <4.16,
                         aeson >=1.3.1.1 && <1.6,
                         greskell >=1.0.0.0 && <1.3,
                         net-spider >=0.4.0.0 && <0.5,
@@ -72,6 +72,7 @@
                         NetSpider.RPL.DAOSpec,
                         NetSpider.RPL.CombinedSpec,
                         JSONUtil
+  build-tool-depends:   hspec-discover:hspec-discover
   build-depends:        base, net-spider-rpl, net-spider, text, monad-logger, ip, aeson,
                         hspec >=2.5.5,
                         bytestring >=0.10.8.2 && <0.11,