diff --git a/scripts/start-synth.sh b/scripts/start-synth.sh
index 694ea10..92a045f 100755
--- a/scripts/start-synth.sh
+++ b/scripts/start-synth.sh
@@ -31,7 +31,7 @@ if ! command -v pd &>/dev/null; then
 fi
 
 MIN_PD_VERSION="0.54.0"
-PD_VERSION=$(pd --version 2>&1 | grep -oP '[\d]+\.[\d]+-?[\d]*' | head -1 || echo "0.0.0")
+PD_VERSION=$(pd -version 2>&1 | grep -oP '\d+\.\d+\.\d+' | head -1 || echo "0.0.0")
 if printf '%s\n' "$MIN_PD_VERSION" "$PD_VERSION" | sort -V | head -1 | grep -q "^$MIN_PD_VERSION$"; then
     info "Pd version $PD_VERSION (>= $MIN_PD_VERSION)"
 else