diff --git a/build_server/__init__.py b/build_server/__init__.py
index 6a57d86..3b76a2d 100644
--- a/build_server/__init__.py
+++ b/build_server/__init__.py
@@ -3,11 +3,13 @@
 from os import environ
 from flask import Flask, request
 from subprocess import check_output
+import json
 
 app = Flask(__name__)
 
 @app.route('/<strategy>', methods=['POST'])
 def build(strategy):
-    app.logger.info(str(request.get_json()))
-    print(strategy, request.get_json())
-    return check_output([f"/{environ['STRATEGIES_DIR']}/{strategy}", request.get_json()])
+    json = json.dumps(request.get_json())
+    app.logger.info(json)
+    print(strategy, json)
+    return check_output([f"/{environ['STRATEGIES_DIR']}/{strategy}", json])