diff --git a/packages/controller/controller.ts b/packages/controller/controller.ts
index 46b04cb0..9e154c47 100644
--- a/packages/controller/controller.ts
+++ b/packages/controller/controller.ts
@@ -26,10 +26,12 @@ import DailyRotateFile from "winston-daily-rotate-file";
 import jwt from "jsonwebtoken";
 
 // homebrew modules
+// Reduce startup time by lazy compiling schemas.
+import "./src/set_lazy_schema_compilation.js";
 import * as lib from "@clusterio/lib";
 import { ConsoleTransport, levels, logger } from "@clusterio/lib";
 
-import Controller from "./src/Controller.js";
+import type Controller from "./src/Controller.js";
 import UserManager from "./src/UserManager.js";
 import UserRecord from "./src/UserRecord.js";
 import packageConfig from "@clusterio/controller/package.json" with { type: "json" };
@@ -203,6 +205,7 @@ async function handleBootstrapCommand(
 		}
 		let ctlConfig = new lib.CtlConfig("control");
 
+		const { default: Controller } = await import("./src/Controller.js");
 		ctlConfig.set("ctl.controller_url", Controller.calculateControllerUrl(controllerConfig));
 		ctlConfig.set(
 			"ctl.controller_token",
@@ -475,6 +478,8 @@ async function startup() {
 		return;
 	}
 
+	// Loaded here as the server is not needed by the other commands
+	const { default: Controller } = await import("./src/Controller.js");
 	controller = await Controller.fromConfig(
 		controllerConfig,
 		pluginInfos,
diff --git a/packages/controller/src/set_lazy_schema_compilation.ts b/packages/controller/src/set_lazy_schema_compilation.ts
new file mode 100644
index 00000000..f5ff3418
--- /dev/null
+++ b/packages/controller/src/set_lazy_schema_compilation.ts
@@ -0,0 +1,3 @@
+// This needs to be a separate file due to ECMAScript Modules evaluating code in
+// imported modules before any code in the file that imports it.
+(global as any).lazySchemaCompilation = true;
diff --git a/packages/host/host.ts b/packages/host/host.ts
index 11ea2ba8..e9af8f0b 100755
--- a/packages/host/host.ts
+++ b/packages/host/host.ts
@@ -20,10 +20,12 @@ import winston from "winston";
 import "winston-daily-rotate-file";
 
 // internal libraries
+// Reduce startup time by lazy compiling schemas.
+import "./src/set_lazy_schema_compilation.js";
 import * as lib from "@clusterio/lib";
 import { ConsoleTransport, levels, logger } from "@clusterio/lib";
 
-import Host from "./src/Host.js";
+import type Host from "./src/Host.js";
 import { createScenarioCommand, handleCreateScenarioCommand } from "./src/create_scenario.js";
 
 let host: Host | undefined;
@@ -233,6 +235,8 @@ async function startHost() {
 		return;
 	}
 
+	// Loaded here as the server is not needed by the other commands
+	const { default: Host } = await import("./src/Host.js");
 	let hostConnector = new HostConnector(hostConfig, pluginInfos);
 	host = await Host.fromConfig(
 		hostConfig,
diff --git a/packages/host/src/set_lazy_schema_compilation.ts b/packages/host/src/set_lazy_schema_compilation.ts
new file mode 100644
index 00000000..f5ff3418
--- /dev/null
+++ b/packages/host/src/set_lazy_schema_compilation.ts
@@ -0,0 +1,3 @@
+// This needs to be a separate file due to ECMAScript Modules evaluating code in
+// imported modules before any code in the file that imports it.
+(global as any).lazySchemaCompilation = true;
diff --git a/test/integration/index.js b/test/integration/index.js
index ccb977e7..158bbd2a 100644
--- a/test/integration/index.js
+++ b/test/integration/index.js
@@ -205,17 +205,17 @@ export function exec(command, options = {}) {
 }
 
 export function execController(...args) {
-	args[0] = `node --enable-source-maps ../../packages/controller ${args[0]}`;
+	args[0] = `node --enable-source-maps ../../packages/controller/dist/node/controller.js ${args[0]}`;
 	return exec(...args);
 }
 
 export function execHost(...args) {
-	args[0] = `node --enable-source-maps ../../packages/host ${args[0]}`;
+	args[0] = `node --enable-source-maps ../../packages/host/dist/node/host.js ${args[0]}`;
 	return exec(...args);
 }
 
 export function execCtlProcess(...args) {
-	args[0] = `node --enable-source-maps ../../packages/ctl ${args[0]}`;
+	args[0] = `node --enable-source-maps ../../packages/ctl/dist/node/ctl.js ${args[0]}`;
 	return exec(...args);
 }