diff --git a/docs/generators/postman-collection.md b/docs/generators/postman-collection.md
index a0a97b43f069..f15bc8ec58cb 100644
--- a/docs/generators/postman-collection.md
+++ b/docs/generators/postman-collection.md
@@ -156,6 +156,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |OAuth2_Password|✓|OAS2,OAS3
 |OAuth2_ClientCredentials|✓|OAS2,OAS3
 |OAuth2_AuthorizationCode|✓|OAS2,OAS3
+|SignatureAuth|✗|OAS3
 
 ### Wire Format Feature
 | Name | Supported | Defined By |