Update 3.1.1.md

Author: ralfhandl

versions/3.1.1.md

@@ -4126,6 +4126,7 @@ Certain fields allow the use of Markdown which can contain HTML including script
 | 3.1.0     | 2021-02-15 | Release of the OpenAPI Specification 3.1.0        |
 | 3.1.0-rc1 | 2020-10-08 | rc1 of the 3.1 specification                      |
 | 3.1.0-rc0 | 2020-06-18 | rc0 of the 3.1 specification                      |
+| 3.0.4     | TBD        | Patch release of the OpenAPI Specification 3.0.4  |
 | 3.0.3     | 2020-02-20 | Patch release of the OpenAPI Specification 3.0.3  |
 | 3.0.2     | 2018-10-08 | Patch release of the OpenAPI Specification 3.0.2  |
 | 3.0.1     | 2017-12-06 | Patch release of the OpenAPI Specification 3.0.1  |