diff --git a/ChangeLog b/ChangeLog
index 4bf05e7..7f951c5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+chmpx (1.0.51) unstable; urgency=low
+
+  * Updated dependency for fixing bugs in libfullock
+  * Fixed error/warning for compiling and changed travis.yaml - #2
+
+ -- Takeshi Nakatani <ggtakec@gmail.com>  Tue, 14 Feb 2017 13:01:55 +0900
+
 chmpx (1.0.50) unstable; urgency=low
 
   * First version of open sorce on Github
diff --git a/configure.ac b/configure.ac
index 01109cc..e44ee70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,11 +76,11 @@ AC_CONFIG_FILES([Makefile
 
 # Check for k2hash + libfullock
 if test "x${CHECK_K2HASH}" != "xno"; then
-	PKG_CHECK_MODULES([k2hash], [libk2hash >= 1.0.52], [have_k2hash=yes], [have_k2hash=no])
+	PKG_CHECK_MODULES([k2hash], [libk2hash >= 1.0.54], [have_k2hash=yes], [have_k2hash=no])
 	if test "x${have_k2hash}" = "xno"; then
 		AC_MSG_ERROR([not found k2hash package.])
 	fi
-	PKG_CHECK_MODULES([fullock], [libfullock >= 1.0.21], [have_fullock=yes], [have_fullock=no])
+	PKG_CHECK_MODULES([fullock], [libfullock >= 1.0.23], [have_fullock=yes], [have_fullock=no])
 	if test "x${have_fullock}" = "xno"; then
 		AC_MSG_ERROR([not found fullock package.])
 	fi
diff --git a/fullock b/fullock
index 9157151..4cfeaa1 160000
--- a/fullock
+++ b/fullock
@@ -1 +1 @@
-Subproject commit 9157151ba9da56cfc565721b9861c28884e4808e
+Subproject commit 4cfeaa170c9560d0900b98ff3080dadaf803967e
diff --git a/k2hash b/k2hash
index ce25b7b..0f7ee2d 160000
--- a/k2hash
+++ b/k2hash
@@ -1 +1 @@
-Subproject commit ce25b7be609096052870d6343cb7a101f000826d
+Subproject commit 0f7ee2d5817a884315c7458a2dc90703a719c485