diff --git a/eth/engineapi/capabilities.go b/eth/engineapi/capabilities.go
index ccd262a1cb..448b702afc 100644
--- a/eth/engineapi/capabilities.go
+++ b/eth/engineapi/capabilities.go
@@ -40,7 +40,7 @@ func (rt *Router) handleCapabilities(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	resp := capabilitiesResponse{
-		SupportedForks:      []string{"paris", "shanghai", "cancun", "prague", "osaka", "amsterdam"},
+		SupportedForks:      []string{"paris", "shanghai", "cancun", "prague", "osaka"},
 		ForkScopedEndpoints: []string{"payloads", "forkchoice", "bodies"},
 		IndependentlyVersioned: map[string][]string{
 			"blobs": {"v1", "v2", "v3", "v4"},
diff --git a/eth/engineapi/router_test.go b/eth/engineapi/router_test.go
index 7dd4c3189c..3f3534e7f7 100644
--- a/eth/engineapi/router_test.go
+++ b/eth/engineapi/router_test.go
@@ -247,7 +247,9 @@ func TestRouterCapabilities(t *testing.T) {
 	}
 	// Capabilities must advertise every fork the router routes, so a consensus
 	// client negotiates SSZ for all of them rather than falling back to JSON-RPC.
-	want := map[string]bool{"paris": true, "shanghai": true, "cancun": true, "prague": true, "osaka": true, "amsterdam": true}
+	// amsterdam is routed but not yet fully implemented, so it is intentionally
+	// not advertised for now.
+	want := map[string]bool{"paris": true, "shanghai": true, "cancun": true, "prague": true, "osaka": true}
 	if len(c.SupportedForks) != len(want) {
 		t.Errorf("supported forks: got %v, want all of %v", c.SupportedForks, want)
 	}