diff --git a/README.md b/README.md
index f8f37c8a5..880a9ed41 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,14 @@ Issue tracking repo: https://github.com/devfile/api with label area/registry
 
 ## Build
 
+### Prerequisite
+
+The current release relies on [oapi-codegen 1.12.4](https://github.com/deepmap/oapi-codegen/tree/v1.12.4) for OpenAPI source generation. See the [Index Server README](index/server/README.md#source-generation) for more information.
+
+To install, run:
+`go install github.com/deepmap/oapi-codegen/cmd/oapi-codegen@1.12.4`
+
+### Instructions
 If you want to run the build scripts with Podman, set the environment variable
 `export USE_PODMAN=true`