diff --git a/install-pi.sh b/install-pi.sh
index a2b0d88..4af7374 100755
--- a/install-pi.sh
+++ b/install-pi.sh
@@ -140,7 +140,8 @@ if [ -z "$PI_BIN" ] && command -v npm &>/dev/null; then
 	fi
 fi
 
-# Add pi's directory to PATH for this session so pi install subprocess works
+# Add pi's directory to PATH for this session so pi install subprocess works,
+# and permanently add it to the shell profile if not already there.
 if [ -n "$PI_BIN" ]; then
 	PI_DIR="$(dirname "$PI_BIN")"
 	case ":$PATH:" in
@@ -148,6 +149,29 @@ if [ -n "$PI_BIN" ]; then
 	*)
 		export PATH="$PI_DIR:$PATH"
 		info "Added $PI_DIR to PATH for this session"
+
+		# Permanently add to shell profile
+		SHELL_RC=""
+		if [ -n "${ZSH_VERSION:-}" ] && [ -f "$HOME/.zshrc" ]; then
+			SHELL_RC="$HOME/.zshrc"
+		elif [ -f "$HOME/.bashrc" ]; then
+			SHELL_RC="$HOME/.bashrc"
+		fi
+
+		if [ -n "$SHELL_RC" ]; then
+			PATH_LINE="export PATH=\"$PI_DIR:\$PATH\""
+			if ! grep -qF "$PI_DIR" "$SHELL_RC" 2>/dev/null; then
+				echo "" >>"$SHELL_RC"
+				echo "# Added by install-pi.sh" >>"$SHELL_RC"
+				echo "$PATH_LINE" >>"$SHELL_RC"
+				success "Added $PI_DIR to $SHELL_RC (takes effect on next login)"
+			else
+				info "$PI_DIR already in $SHELL_RC"
+			fi
+		else
+			warn "Could not detect shell config. Add this line to your profile manually:"
+			warn "  export PATH=\"$PI_DIR:\$PATH\""
+		fi
 		;;
 	esac
 	success "Pi is available: $PI_BIN"
@@ -205,21 +229,6 @@ info "════════════════════════
 info ""
 info "Pi binary: $PI_BIN"
 info ""
-if [ -n "$PI_DIR" ]; then
-	case ":$PATH:" in
-	*":$PI_DIR:"*) ;;
-	*)
-		SHELL_RC=""
-		if [ -f "$HOME/.bashrc" ]; then SHELL_RC="$HOME/.bashrc"; elif [ -f "$HOME/.zshrc" ]; then SHELL_RC="$HOME/.zshrc"; fi
-		if [ -n "$SHELL_RC" ]; then
-			info "NOTE: Add $PI_DIR to your PATH permanently by running:"
-			info "  echo 'export PATH=\"$PI_DIR:\$PATH\"' >> $SHELL_RC"
-			info "  source $SHELL_RC"
-		fi
-		;;
-	esac
-fi
-info ""
 info "Getting started:"
 info "  1. Navigate to your project: cd /path/to/project"
 info "  2. Start Pi: pi"