diff --git a/setup_blocks.py b/setup_blocks.py
index 5334a15..4c06037 100644
--- a/setup_blocks.py
+++ b/setup_blocks.py
@@ -4,6 +4,7 @@ Setup Prefect Blocks from environment variables.
 
 import os
 from prefect_aws import AwsCredentials
+from prefect_aws.client_parameters import AwsClientParameters
 from prefect.blocks.system import Secret
 
 
@@ -16,10 +17,20 @@ def setup_blocks():
     aws_endpoint = os.environ.get("AWS_ENDPOINT_URL")
     
     if all([aws_access_key, aws_secret_key, aws_endpoint]):
+        # Configuration client pour Garage (S3-compatible)
+        client_params = AwsClientParameters(
+            endpoint_url=aws_endpoint,
+            config={
+                "signature_version": "s3v4",
+                "s3": {"addressing_style": "path"},
+            },
+        )
+        
         creds = AwsCredentials(
             aws_access_key_id=aws_access_key,
             aws_secret_access_key=aws_secret_key,
-            aws_endpoint_url=aws_endpoint,
+            region_name="garage",
+            aws_client_parameters=client_params,
         )
         creds.save("garage-credentials", overwrite=True)
         print("✅ Block 'garage-credentials' created/updated")