diff --git a/src/autoupdate_impl.py b/src/autoupdate_impl.py
index ed15a0b8..f7dd6ebe 100644
--- a/src/autoupdate_impl.py
+++ b/src/autoupdate_impl.py
@@ -113,12 +113,15 @@ def check_updates(context: AutoUpdateContext) -> bool:
             log.warning(f"{e.command}: {e.stderr}")
         else:
             raise e
-    p = subprocess.run(f"{sys.executable} -m pip install -r requirements.txt", shell=True)
+    p = subprocess.run(f"{sys.executable} -m pip install -r requirements.txt", shell=True, capture_output=True)
     if p.returncode != 0:
         mail.send(
             secret_config.admin_email_list,
             "Autoupdate error",
-            get_autoupdate_error_message(f"Failed to fetch requirements.txt. Return code: {p.returncode}"))
+            get_autoupdate_error_message(
+                f"Failed to fetch requirements.txt. Return code: {p.returncode}\n"
+                f"stdout:\n{p.stdout}\n"
+                f"stderr:\n{p.stderr}\n"))
     minibot_response = "WalBot automatic update is in progress. Please, wait..."
     subprocess.call(f"{sys.executable} walbot.py startmini --message '{minibot_response}' --nohup &", shell=True)
     p = subprocess.run(f"{sys.executable} walbot.py stop", shell=True)