diff --git a/lib/ansible/modules/cloud/digital_ocean/digital_ocean.py b/lib/ansible/modules/cloud/digital_ocean/digital_ocean.py
index f3a904e8b24..d0de1cdd8ae 100644
--- a/lib/ansible/modules/cloud/digital_ocean/digital_ocean.py
+++ b/lib/ansible/modules/cloud/digital_ocean/digital_ocean.py
@@ -96,6 +96,7 @@ options:
 
 notes:
   - Two environment variables can be used, DO_CLIENT_ID and DO_API_KEY.
+  - Version 1 of DigitalOcean API is used.
 requirements: [ dopy ]
 '''
 
diff --git a/lib/ansible/modules/cloud/digital_ocean/digital_ocean_domain.py b/lib/ansible/modules/cloud/digital_ocean/digital_ocean_domain.py
index 1086a6bab16..b26d4e9f7f3 100644
--- a/lib/ansible/modules/cloud/digital_ocean/digital_ocean_domain.py
+++ b/lib/ansible/modules/cloud/digital_ocean/digital_ocean_domain.py
@@ -46,6 +46,7 @@ options:
 
 notes:
   - Two environment variables can be used, DO_CLIENT_ID and DO_API_KEY.
+  - Version 1 of DigitalOcean API is used.
 '''
 
 
diff --git a/lib/ansible/modules/cloud/digital_ocean/digital_ocean_sshkey.py b/lib/ansible/modules/cloud/digital_ocean/digital_ocean_sshkey.py
index 69f32266b51..be75b42ce33 100644
--- a/lib/ansible/modules/cloud/digital_ocean/digital_ocean_sshkey.py
+++ b/lib/ansible/modules/cloud/digital_ocean/digital_ocean_sshkey.py
@@ -46,6 +46,7 @@ options:
 
 notes:
   - Two environment variables can be used, DO_CLIENT_ID and DO_API_KEY.
+  - Version 1 of DigitalOcean API is used.
 '''