diff --git a/serverlessworkflow/modules/ROOT/pages/core/custom-functions-support.adoc b/serverlessworkflow/modules/ROOT/pages/core/custom-functions-support.adoc
index 414d69ec9..a98a8223f 100644
--- a/serverlessworkflow/modules/ROOT/pages/core/custom-functions-support.adoc
+++ b/serverlessworkflow/modules/ROOT/pages/core/custom-functions-support.adoc
@@ -342,9 +342,23 @@ The above function will send a `POST` request to the http://custom-function-knat
 
 [NOTE]
 ====
-`GET` requests are not yet supported.
+You can also send `GET` requests by setting `method=GET` in `operation`. In this case, the arguments are forwarded over a query string.
 ====
 
+.Example of a `GET` request
+[source,json]
+----
+  "functions": [
+    {
+      "name": "greet",
+      "type": "custom",
+      "operation": "knative:services.v1.serving.knative.dev/custom-function-knative-service?path=/plainJsonFunction&method=GET", <1>
+    }
+  ]
+----
+
+<1> `GET` request
+
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