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diff --git a/‎CHANGELOG.md
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diff --git a/‎lib/init-action.js
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diff --git a/‎lib/init-action.js.map
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diff --git a/‎src/init-action.ts
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@@ -4,7 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
-No user facing changes.
+- `threads` and `ram` inputs may be set via CODEQL_THREADS and CODEQL_RAM runner environment variables. [#2891](https://github.com/github/codeql-action/pull/2891)
 
 ## 3.28.17 - 02 May 2025
 
 
@@ -547,7 +547,8 @@ async function run() {
     );
     core.exportVariable(
       "CODEQL_THREADS",
-      getThreadsFlagValue(getOptionalInput("threads"), logger).toString(),
+      process.env["CODEQL_THREADS"] ||
+        getThreadsFlagValue(getOptionalInput("threads"), logger).toString(),
     );
 
     // Disable Kotlin extractor if feature flag set