diff --git a/pyproject.toml b/pyproject.toml
index f8da6ef..c6b4686 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "resigner"
-version = "0.3.12"
+version = "0.3.13"
 authors = [
     {name = "Media Predict"},
     {email = "engineering@mediapredict.com"}
diff --git a/resigner/utils.py b/resigner/utils.py
index 7baf400..07a5ecd 100755
--- a/resigner/utils.py
+++ b/resigner/utils.py
@@ -3,8 +3,14 @@
 
 HEADER_KEY_PREFIX = "RESIGNER"
 
-add_prefix = lambda key : "{0}{1}{2}".format(HEADER_KEY_PREFIX, "-", key)
-to_server_key = lambda key : "{0}{1}{2}".format("HTTP", "-", key).replace("-", "_")
+
+def add_prefix(key):
+    return f"{HEADER_KEY_PREFIX}-{key}"
+
+
+def to_server_key(key):
+    return f"HTTP_{key}".replace("-", "_")
+
 
 CLIENT_TIME_STAMP_KEY = add_prefix("TIME-STAMP")
 CLIENT_API_SIGNATURE_KEY = add_prefix("API-SIGNATURE")
@@ -14,15 +20,16 @@
 SERVER_API_SIGNATURE_KEY = to_server_key(CLIENT_API_SIGNATURE_KEY)
 SERVER_API_KEY = to_server_key(CLIENT_API_KEY)
 
+
 def get_signature(secret, body, timestamp, url):
     if not body:
         body = ""
 
-    signer = Signer(key=secret)
-    return signer.signature( ":".join([body, timestamp, url]) )
+    # fallback_keys="" prevents fetching from django config
+    # Our Analytics package is meant for use outside of django
+    signer = Signer(key=secret, fallback_keys="")
+    return signer.signature(f"{body}:{timestamp}:{url}")
+
 
 def get_settings_param(name, default=0):
-    if hasattr(settings, name):
-        return getattr(settings, name)
-    else:
-        return default
\ No newline at end of file
+    return getattr(settings, name, default)