diff --git a/lib/self-upgrade.bash b/lib/self-upgrade.bash
index fd9c49a..ab5e553 100644
--- a/lib/self-upgrade.bash
+++ b/lib/self-upgrade.bash
@@ -14,11 +14,18 @@ EOF
 }
 
 function development_upgrade {
-  echo TODO:...
-  # CHECK same user
-  # GIT CLONE
-  # INITIATE
-  :
+  [[ "$MIAOU_BASH_MODE_OWNER" != "$USER" ]] &&
+    >&2 echo "ERROR: development mode owned by: $MMIAOU_BASH_MODE_OWNER" &&
+    builtin exit 11
+
+  cd "$MIAOU_BASH_DIR"/ || return 12 # should not happen
+  [[ -n "$(git status --porcelain)" ]] &&
+    >&2 echo "ERROR: repository has uncommited changes" &&
+    builtin exit 12
+
+  git pull
+  sudo_root
+  sudo miaou lib/initiate.bash
 }
 
 function system_upgrade {