diff --git a/README.md b/README.md
index 4887c49..646547f 100644
--- a/README.md
+++ b/README.md
@@ -711,4 +711,14 @@ In your task file you can import these functions from the taskfile library.
 # Import commands
 
 [ -f ~/taskfile.build/bin/load-env ] && source ~/taskfile.build/bin/load-env
+```
+
+### update-submodule
+
+```bash
+    printf "$COLUMN" "update-submodule" "" "Update git submodules."
+
+# Import commands
+
+[ -f ~/taskfile.build/bin/update-submodule ] && source ~/taskfile.build/bin/update-submodule
 ```
\ No newline at end of file
diff --git a/bin/update-submodule b/bin/update-submodule
new file mode 100755
index 0000000..0707248
--- /dev/null
+++ b/bin/update-submodule
@@ -0,0 +1,4 @@
+function submodule() {
+    echo "Update git submodules."
+    git submodule update --init --recursive --checkout --depth=1
+}
\ No newline at end of file