diff --git a/polling-action/VERSION b/polling-action/VERSION
index 359a5b9..50aea0e 100644
--- a/polling-action/VERSION
+++ b/polling-action/VERSION
@@ -1 +1 @@
-2.0.0
\ No newline at end of file
+2.1.0
\ No newline at end of file
diff --git a/polling-action/action.yml b/polling-action/action.yml
index a6e7d87..31bb7ac 100644
--- a/polling-action/action.yml
+++ b/polling-action/action.yml
@@ -66,7 +66,7 @@ outputs:
 
 runs:
   using: 'docker'
-  image: 'docker://ghcr.io/informatievlaanderen/awscurl-polling-action:2.0.0'
+  image: 'docker://ghcr.io/informatievlaanderen/awscurl-polling-action:2.1.0'
   args:
     - ${{ inputs.environment }}
     - ${{ inputs.version }}
diff --git a/polling-action/main.py b/polling-action/main.py
index 8978a98..9e341b2 100755
--- a/polling-action/main.py
+++ b/polling-action/main.py
@@ -20,20 +20,21 @@
 status_responses = []
 
 def sendWarning(message):
-    os.system(f'echo "::warning ::{message}"')
+    print(f'::warning::{message}')
 
 def sendFailed(message):
-    os.system(f'echo "::error ::{message}"')
+    print(f'::error::{message}')
     sys.exit(1)
 
 def sendGroupedOutput(group_name, body):
-    os.system(f'echo "::group::{group_name}"')
+    print(f'::group::{group_name}')
     for line in body:
-        os.system(f'echo "{line}"')
-    os.system(f'echo "::endgroup::"')
+        print(f'{line}')
+    print(f'::endgroup::')
 
-def sendOutput(name,value):
-    os.system(f'echo "{name}={value}" >> $GITHUB_OUTPUT')
+def sendOutput(name, value):
+    with open(os.environ['GITHUB_OUTPUT'], 'a') as fh:
+        print(f'{name}={value}', file=fh)
 
 def exec(cmd):
     return (subprocess.Popen(cmd,