diff --git a/aioairctrl-shell.sh b/aioairctrl-shell.sh
index 35346efd..1e44fdd8 100644
--- a/aioairctrl-shell.sh
+++ b/aioairctrl-shell.sh
@@ -1,7 +1,7 @@
 python="python3"
 pip="pip3"
 manifest=./custom_components/philips_airpurifier/manifest.json
-aioairctrl=$(grep -Po 'git.*aioairctrl[^"]*' $manifest)
+aioairctrl=$(sed -rn 's/^\s*"aioairctrl @ ([^"]*)"/\1/p' $manifest)
 
 if ! command -v $python &> /dev/null
 then
diff --git a/custom_components/philips_airpurifier/manifest.json b/custom_components/philips_airpurifier/manifest.json
index c7c2c213..b45ce0c7 100644
--- a/custom_components/philips_airpurifier/manifest.json
+++ b/custom_components/philips_airpurifier/manifest.json
@@ -1,11 +1,11 @@
 {
   "domain": "philips_airpurifier",
   "name": "Philips AirPurifier (with CoAP)",
-  "version": "0.4.0-pre.3",
+  "version": "0.4.0-pre.4",
   "documentation": "https://github.com/betaboon/philips-airpurifier",
   "dependencies": [],
   "codeowners": ["@betaboon"],
   "requirements": [
-    "aioairctrl @ git+https://github.com/betaboon/aioairctrl@v0.2.1"
+    "aioairctrl @ git+https://github.com/betaboon/aioairctrl@v0.2.2"
   ]
 }