diff --git a/contrib/polybar-git.aur/PKGBUILD b/contrib/polybar-git.aur/PKGBUILD
index 5b94cb59..24f4baa6 100644
--- a/contrib/polybar-git.aur/PKGBUILD
+++ b/contrib/polybar-git.aur/PKGBUILD
@@ -31,7 +31,8 @@ prepare() {
 
 build() {
   cd "${_pkgname}/build" || exit 1
-  cmake -DCMAKE_INSTALL_PREFIX=/usr ..
+  # Force cmake to use system python (to detect xcbgen)
+  cmake -DCMAKE_INSTALL_PREFIX=/usr -DPYTHON_EXECUTABLE=/usr/bin/python3 ..
   cmake --build .
 }
 
diff --git a/lib/xpp b/lib/xpp
index 0d927ee0..044e69d0 160000
--- a/lib/xpp
+++ b/lib/xpp
@@ -1 +1 @@
-Subproject commit 0d927ee0e7c6debec24d47d5fe42678f3bcdd1e2
+Subproject commit 044e69d05db7f89339bda1ccd1efe0263b01c8f6