diff --git a/opentech/stream_forms/blocks.py b/opentech/stream_forms/blocks.py
index aac65d6458cb0cbf5f687acc32d03e340613c506..a620a6c8ff64b464829ce48bbb63d0a214b044af 100644
--- a/opentech/stream_forms/blocks.py
+++ b/opentech/stream_forms/blocks.py
@@ -1,3 +1,4 @@
+# Credit to https://github.com/BertrandBordage for initial implementation
 from django import forms
 from django.db.models import BLANK_CHOICE_DASH
 from django.utils.dateparse import parse_datetime
diff --git a/opentech/stream_forms/models.py b/opentech/stream_forms/models.py
index dfae225b690b87954141f602a1ccba8076d2a845..3c34df543635e91fc8bb07d586038a85cb4edf24 100644
--- a/opentech/stream_forms/models.py
+++ b/opentech/stream_forms/models.py
@@ -1,3 +1,4 @@
+# Credit to https://github.com/BertrandBordage for initial implementation
 from collections import OrderedDict
 
 from wagtail.wagtailforms.models import AbstractForm