diff --git a/IMPLEMENTATIONS.md b/IMPLEMENTATIONS.md
index 868123c6cd..86cafdc9aa 100644
--- a/IMPLEMENTATIONS.md
+++ b/IMPLEMENTATIONS.md
@@ -26,6 +26,7 @@ These tools are not endorsed by the OAI.
 | openapi-validator | [gitlab/mmal/openapi-validator](https://gitlab.com/mmalawski/openapi-validator) | PHP | Validates response against OpenAPI schema |
 | OpenAPI-Delphi | [github/paolo-rossi/OpenAPI-Delphi](https://github.com/paolo-rossi/OpenAPI-Delphi) | Delphi | Delphi implementation of a generator, parser and validator for the OpenAPI 3 Specification |
 | spring-openapi | [github/jrcodeza/spring-openapi](https://github.com/jrcodeza/spring-openapi) | Java | OpenAPI v3 generator for Java Spring. Includes also client generation. Supports inheritance with discriminators and Jackson annotations and custom interceptors. |
+| OpenAPI-EDI | [EDI API](https://docs.edination.com/hc/en-gb/articles/360012871880-OpenAPI-EDI-Extensions) | dotnet | Representation of electronic data interchange (EDI) document formats using OpenAPI 3 |
 
 #### Editors