diff --git a/argocd/manifests/devpi/start.sh b/argocd/manifests/devpi/start.sh
index faf3139..e34e60c 100644
--- a/argocd/manifests/devpi/start.sh
+++ b/argocd/manifests/devpi/start.sh
@@ -3,7 +3,8 @@ set -e
 
 SERVERDIR="${DEVPI_SERVERDIR:-/devpi}"
 HOST="${DEVPI_HOST:-0.0.0.0}"
-PORT="${DEVPI_PORT:-3141}"
+# Note: Can't use DEVPI_PORT - Kubernetes auto-sets it for service discovery
+PORT="${DEVPI_LISTEN_PORT:-3141}"
 OUTSIDE_URL="${DEVPI_OUTSIDE_URL:-}"
 
 # Check if devpi is initialized