diff --git a/Documentation/getting-started/compatibility.md b/Documentation/getting-started/compatibility.md
index cf14bce34..9d429f05a 100644
--- a/Documentation/getting-started/compatibility.md
+++ b/Documentation/getting-started/compatibility.md
@@ -63,12 +63,13 @@ Prometheus Operator supports all Prometheus versions >= v2.0.0. The operator's e
 * v3.4.0
 * v3.4.1
 * v3.4.2
+* v3.5.0
 ```
 
 The end-to-end tests are mostly tested against
 
 ```$ mdox-exec="go run ./cmd/po-docgen/. compatibility defaultPrometheusVersion"
-* v3.4.2
+* v3.5.0
 ```
 
 ## Alertmanager
diff --git a/pkg/operator/defaults.go b/pkg/operator/defaults.go
index b569d6432..422aa53b7 100644
--- a/pkg/operator/defaults.go
+++ b/pkg/operator/defaults.go
@@ -89,6 +89,7 @@ var (
 		"v3.4.0",
 		"v3.4.1",
 		"v3.4.2",
+		"v3.5.0",
 	}
 )