diff --git a/Makefile b/Makefile
index d75e5ad4..10629d38 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ PLT_APPS = crypto public_key ssl
 # Dependencies.
 
 DEPS = cowlib ranch
-dep_cowlib = git https://github.com/ninenines/cowlib 1.2.0
+dep_cowlib = git https://github.com/ninenines/cowlib 1.3.0
 
 TEST_DEPS = ct_helper gun
 dep_ct_helper = git https://github.com/extend/ct_helper.git master
diff --git a/rebar.config b/rebar.config
index 4dafa266..04b6f41a 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,4 +1,4 @@
 {deps, [
-	{cowlib, ".*", {git, "git://github.com/ninenines/cowlib.git", "1.2.0"}},
+	{cowlib, ".*", {git, "git://github.com/ninenines/cowlib.git", "1.3.0"}},
 	{ranch, ".*", {git, "git://github.com/ninenines/ranch.git", "1.0.0"}}
 ]}.