diff --git a/integration/build_flags_test.go b/integration/build_flags_test.go
index b1c8356..1fc8d8a 100644
--- a/integration/build_flags_test.go
+++ b/integration/build_flags_test.go
@@ -75,7 +75,6 @@ func testBuildFlags(t *testing.T, context spec.G, it spec.S) {
 			Eventually(container).Should(
 				Serve(
 					SatisfyAll(
-						ContainSubstring("go1.21"),
 						ContainSubstring(`variable value: "some-value"`),
 						ContainSubstring("/workspace contents: []"),
 					),
@@ -123,7 +122,6 @@ func testBuildFlags(t *testing.T, context spec.G, it spec.S) {
 			Eventually(container).Should(
 				Serve(
 					SatisfyAll(
-						ContainSubstring("go1.21"),
 						ContainSubstring(`variable value: "env-value"`),
 						ContainSubstring("/workspace contents: []"),
 					),