diff --git a/doc/src/guide/getting_started.ezdoc b/doc/src/guide/getting_started.ezdoc
index 81fbc99b..88ebd931 100644
--- a/doc/src/guide/getting_started.ezdoc
+++ b/doc/src/guide/getting_started.ezdoc
@@ -14,7 +14,7 @@ you need to push your first Cowboy application to production.
 
 :: Bootstrap
 
-We are going to use the ^"erlang.mk^https://github.com/extend/erlang.mk
+We are going to use the ^"erlang.mk^https://github.com/ninenines/erlang.mk
 build system. It also offers bootstrap features allowing us to
 quickly get started without having to deal with minute details.
 
@@ -29,7 +29,7 @@ Then we need to download `erlang.mk`. Either use the following
 command or download it manually.
 
 ``` bash
-$ wget https://raw.githubusercontent.com/extend/erlang.mk/master/erlang.mk
+$ wget https://raw.githubusercontent.com/ninenines/erlang.mk/master/erlang.mk
 ```
 
 We can now bootstrap our application. Since we are going to generate
diff --git a/erlang.mk b/erlang.mk
index e846738d..6c1d9cd1 100644
--- a/erlang.mk
+++ b/erlang.mk
@@ -93,7 +93,7 @@ export ERL_LIBS
 PKG_FILE2 ?= $(CURDIR)/.erlang.mk.packages.v2
 export PKG_FILE2
 
-PKG_FILE_URL ?= https://raw.githubusercontent.com/extend/erlang.mk/master/packages.v2.tsv
+PKG_FILE_URL ?= https://raw.githubusercontent.com/ninenines/erlang.mk/master/packages.v2.tsv
 
 # Core targets.
 
diff --git a/rebar.config b/rebar.config
index e7496848..4018be8f 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,4 +1,4 @@
 {deps, [
-	{cowlib, ".*", {git, "git://github.com/extend/cowlib.git", "1.0.0"}},
-	{ranch, ".*", {git, "git://github.com/extend/ranch.git", "1.0.0"}}
+	{cowlib, ".*", {git, "git://github.com/ninenines/cowlib.git", "1.0.0"}},
+	{ranch, ".*", {git, "git://github.com/ninenines/ranch.git", "1.0.0"}}
 ]}.