diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f6b0ee..4eec017 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,15 @@
 Change Log
 ==========================
 
+3.1.4
+--------------------------
+
+### Fixes
+
+- Fix a possible error on watchOS and tvOS.
+
+
+
 3.1.3
 --------------------------
 
@@ -10,6 +19,7 @@ Change Log
 - Update Xcode to 8.2.
 
 
+
 3.1.2
 --------------------------
 
@@ -17,6 +27,8 @@ Change Log
 
 - Support CocoaPods.
 
+
+
 3.1.1
 --------------------------
 
diff --git a/Gzip.xcodeproj/project.pbxproj b/Gzip.xcodeproj/project.pbxproj
index ce116a0..9cb8000 100644
--- a/Gzip.xcodeproj/project.pbxproj
+++ b/Gzip.xcodeproj/project.pbxproj
@@ -45,9 +45,9 @@
 /* Begin PBXFileReference section */
 		2A321EDF1D4A58C7002B0245 /* zlib */ = {isa = PBXFileReference; lastKnownFileType = folder; path = zlib; sourceTree = "<group>"; };
 		2A321EE71D4A6138002B0245 /* Gzip.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Gzip.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-		2A321EFF1D4A61A4002B0245 /* libz.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libz.tbd; path = Platforms/WatchOS.platform/Developer/SDKs/WatchOS3.0.sdk/usr/lib/libz.tbd; sourceTree = DEVELOPER_DIR; };
+		2A321EFF1D4A61A4002B0245 /* libz.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libz.tbd; path = Platforms/WatchOS.platform/Developer/SDKs/WatchOS.sdk/usr/lib/libz.tbd; sourceTree = DEVELOPER_DIR; };
 		2A321F071D4A635F002B0245 /* Gzip.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Gzip.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-		2A321F101D4A6398002B0245 /* libz.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libz.tbd; path = Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS10.0.sdk/usr/lib/libz.tbd; sourceTree = DEVELOPER_DIR; };
+		2A321F101D4A6398002B0245 /* libz.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libz.tbd; path = Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS.sdk/usr/lib/libz.tbd; sourceTree = DEVELOPER_DIR; };
 		2A58A7571B00F414005FBBC2 /* Tests macOS.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = "Tests macOS.xctest"; sourceTree = BUILT_PRODUCTS_DIR; };
 		2A58A75C1B00F414005FBBC2 /* GzipTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = GzipTests.swift; path = GzipTests/GzipTests.swift; sourceTree = "<group>"; };
 		2A58A7611B00F42C005FBBC2 /* Data+Gzip.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Data+Gzip.swift"; sourceTree = "<group>"; };
diff --git a/GzipSwift.podspec b/GzipSwift.podspec
index d8918a4..595dd87 100644
--- a/GzipSwift.podspec
+++ b/GzipSwift.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "GzipSwift"
-  s.version       = "3.1.3"
+  s.version       = "3.1.4"
   s.summary       = "Swift framework that enables gzip/gunzip Data using zlib."
 
   s.homepage      = "https://github.com/1024jp/GzipSwift"
diff --git a/LICENSE b/LICENSE
index 16a735c..8e17afd 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014-2016 1024jp
+Copyright (c) 2014-2017 1024jp
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/Project/Info.plist b/Project/Info.plist
index be26cd2..fa64494 100644
--- a/Project/Info.plist
+++ b/Project/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>3.1.3</string>
+	<string>3.1.4</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSPrincipalClass</key>
diff --git a/README.md b/README.md
index 32ba5b2..1c03e9d 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,6 @@ pod 'GzipSwift'
 
 ## Lisence
 
-© 2014-2016 1024jp
+© 2014-2017 1024jp
 
 GzipSwift is distributed under the terms of the __MIT License__. See [LISENCE](LISENCE) for details.