diff --git a/changelog.d/4-docs/pr-2338 b/changelog.d/4-docs/pr-2338
new file mode 100644
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+++ b/changelog.d/4-docs/pr-2338
@@ -0,0 +1 @@
+Documentation on how to extra entropy in the web app
diff --git a/docs/src/how-to/install/web-app-settings.md b/docs/src/how-to/install/web-app-settings.md
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--- a/docs/src/how-to/install/web-app-settings.md
+++ b/docs/src/how-to/install/web-app-settings.md
@@ -44,3 +44,17 @@ webapp:
     # ...
     FEATURE_ENABLE_MEDIA_EMBEDS: "false"
 ```
+
+## Enable extra entropy
+
+The Wire desktop application uses system-dependent source of random bits as an internal entropy source when generating cryptographic keys. In certain cases it may be desired to enable externally generated entropy derived from mouse movement.
+
+To enable additional entropy during client creation add the following to your Helm overrides in `values/wire-server/values.yaml`:
+
+```yaml
+webapp:
+  # ...
+  envVars:
+    # ...
+    FEATURE_ENABLE_EXTRA_CLIENT_ENTROPY: "true"
+```