diff --git a/src/lib/commands.ts b/src/lib/commands.ts
index cf533c0..e384407 100644
--- a/src/lib/commands.ts
+++ b/src/lib/commands.ts
@@ -26,26 +26,22 @@ const dockerEnv = {
 }
 
 const up = async (stackName: string, cwd: string) =>
-  (
-    await exec(
-      `nitric up --ci --stack ${stackName}`,
-      undefined,
-      cwd,
-      false,
-      dockerEnv
-    )
-  ).stdout
+  await exec(
+    `nitric up --ci --stack ${stackName}`,
+    undefined,
+    cwd,
+    false,
+    dockerEnv
+  )
 
 const down = async (stackName: string, cwd: string) =>
-  (
-    await exec(
-      `nitric down --ci --stack ${stackName}`,
-      undefined,
-      cwd,
-      false,
-      dockerEnv
-    )
-  ).stdout
+  await exec(
+    `nitric down --ci --stack ${stackName}`,
+    undefined,
+    cwd,
+    false,
+    dockerEnv
+  )
 
 export const commands = {
   up,
diff --git a/src/main.ts b/src/main.ts
index c611456..ee87b10 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -108,10 +108,20 @@ export async function run() {
     // run command if exists
     if (command && stackName) {
       core.info(`Running command ${command}`)
-      const output = await commands[command as keyof typeof commands](
+      const {
+        stdout: output,
+        success,
+        stderr
+      } = await commands[command as keyof typeof commands](
         stackName,
         workingDirectory
       )
+
+      if (!success) {
+        core.error(`Failed running command ${command}`)
+        throw new Error(stderr)
+      }
+
       core.info(`Done running command ${command}`)
 
       core.setOutput('output', output)