diff --git a/oidc_provider/admin.py b/oidc_provider/admin.py
index 1a05dbd..80e8cb9 100644
--- a/oidc_provider/admin.py
+++ b/oidc_provider/admin.py
@@ -1,4 +1,4 @@
-from hashlib import md5
+from hashlib import sha224
 from random import randint
 from uuid import uuid4
 
@@ -36,12 +36,12 @@ class ClientForm(ModelForm):
 
         if instance and instance.pk:
             if (self.cleaned_data['client_type'] == 'confidential') and not instance.client_secret:
-                secret = md5(uuid4().hex.encode()).hexdigest()
+                secret = sha224(uuid4().hex.encode()).hexdigest()
             elif (self.cleaned_data['client_type'] == 'confidential') and instance.client_secret:
                 secret = instance.client_secret
         else:
             if (self.cleaned_data['client_type'] == 'confidential'):
-                secret = md5(uuid4().hex.encode()).hexdigest()
+                secret = sha224(uuid4().hex.encode()).hexdigest()
 
         return secret