diff --git a/packages/coding-agent/src/core/extensions/loader.ts b/packages/coding-agent/src/core/extensions/loader.ts
index bf8c0211..8ff7228f 100644
--- a/packages/coding-agent/src/core/extensions/loader.ts
+++ b/packages/coding-agent/src/core/extensions/loader.ts
@@ -64,12 +64,21 @@ function getAliases(): Record<string, string> {
 	const typeboxEntry = require.resolve("@sinclair/typebox");
 	const typeboxRoot = typeboxEntry.replace(/[\\/]build[\\/]cjs[\\/]index\.js$/, "");
 
+	const packagesRoot = path.resolve(__dirname, "../../../../");
+	const resolveWorkspaceOrSpecifier = (workspaceRelativePath: string, specifier: string): string => {
+		const workspacePath = path.join(packagesRoot, workspaceRelativePath);
+		if (fs.existsSync(workspacePath)) {
+			return workspacePath;
+		}
+		return specifier;
+	};
+
 	_aliases = {
 		"@mariozechner/pi-coding-agent": packageIndex,
-		"@mariozechner/pi-agent-core": require.resolve("@mariozechner/pi-agent-core"),
-		"@mariozechner/pi-tui": require.resolve("@mariozechner/pi-tui"),
-		"@mariozechner/pi-ai": require.resolve("@mariozechner/pi-ai"),
-		"@mariozechner/pi-ai/oauth": require.resolve("@mariozechner/pi-ai/oauth"),
+		"@mariozechner/pi-agent-core": resolveWorkspaceOrSpecifier("agent/src/index.ts", "@mariozechner/pi-agent-core"),
+		"@mariozechner/pi-tui": resolveWorkspaceOrSpecifier("tui/src/index.ts", "@mariozechner/pi-tui"),
+		"@mariozechner/pi-ai": resolveWorkspaceOrSpecifier("ai/src/index.ts", "@mariozechner/pi-ai"),
+		"@mariozechner/pi-ai/oauth": resolveWorkspaceOrSpecifier("ai/src/oauth.ts", "@mariozechner/pi-ai/oauth"),
 		"@sinclair/typebox": typeboxRoot,
 	};