diff --git a/.gitmodules b/.gitmodules
index 8291fae..11d6491 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,18 +13,6 @@
 [submodule "lib/ohmyzsh"]
 	path = lib/ohmyzsh
 	url = https://github.com/robbyrussell/oh-my-zsh
-[submodule "lib/k"]
-	path = lib/k
-	url = https://github.com/rimraf/k
 [submodule "lib/fzf"]
 	path = lib/fzf
 	url = https://github.com/junegunn/fzf.git
-[submodule "lib/util"]
-	path = lib/util
-	url = https://github.com/skx/sysadmin-util
-[submodule "lib/dasht"]
-	path = lib/dasht
-	url = https://github.com/sunaku/dasht
-[submodule "lib/crash"]
-	path = lib/crash
-	url = https://github.com/molovo/crash
diff --git a/zulu/core b/zulu/core
new file mode 160000
index 0000000..4c5db4e
--- /dev/null
+++ b/zulu/core
@@ -0,0 +1 @@
+Subproject commit 4c5db4e6be08ef8b3466298b9e40e52d940adfed