diff --git a/homeassistant/components/knx/manifest.json b/homeassistant/components/knx/manifest.json
index b5c98c7203a..a233ca38705 100644
--- a/homeassistant/components/knx/manifest.json
+++ b/homeassistant/components/knx/manifest.json
@@ -12,7 +12,7 @@
   "quality_scale": "platinum",
   "requirements": [
     "xknx==2.11.2",
-    "xknxproject==3.3.0",
+    "xknxproject==3.4.0",
     "knx-frontend==2023.6.23.191712"
   ]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 6635c4b27ff..36e81817f87 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2740,7 +2740,7 @@ xiaomi-ble==0.21.1
 xknx==2.11.2
 
 # homeassistant.components.knx
-xknxproject==3.3.0
+xknxproject==3.4.0
 
 # homeassistant.components.bluesound
 # homeassistant.components.fritz
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 876233d0ab6..e5ecb8d1f23 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -2043,7 +2043,7 @@ xiaomi-ble==0.21.1
 xknx==2.11.2
 
 # homeassistant.components.knx
-xknxproject==3.3.0
+xknxproject==3.4.0
 
 # homeassistant.components.bluesound
 # homeassistant.components.fritz