diff --git a/cmd/hakurei/json_test.go b/cmd/hakurei/json_test.go
index c6649567..433a514b 100644
--- a/cmd/hakurei/json_test.go
+++ b/cmd/hakurei/json_test.go
@@ -66,7 +66,7 @@ func TestEncodeJSON(t *testing.T) {
 		want string
 	}{
 		{"marshaler", errorJSONMarshaler{},
-			`cannot encode json for main.errorJSONMarshaler: unique error 3735928559 injected by the test suite`},
+			`cannot encode json for *main.errorJSONMarshaler: unique error 3735928559 injected by the test suite`},
 		{"default", func() {},
 			`cannot write json: json: unsupported type: func()`},
 	}
diff --git a/go.mod b/go.mod
index 6457cffa..7514bcba 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module hakurei.app
 
-go 1.26
+go 1.27
diff --git a/internal/report/report_test.go b/internal/report/report_test.go
index 6c7a4046..15abf13e 100644
--- a/internal/report/report_test.go
+++ b/internal/report/report_test.go
@@ -55,7 +55,7 @@ func TestDispatch(t *testing.T) {
 				}),
 			},
 		}, true, []string{`{"kind":"fatal","message":"rejecting coldboot loop","error":"unique error 51966 injected by the test suite"}
-`, `{"kind":"inconsistent","message":"processed inconsistent uevent","error":{"fault":1,"event":{"action":"add","devpath":"\u0000","env":{"V":"\ufffd"},"seqnum":2,"subsystem":""},"object":{"state":1,"devpath":"\u0000","subsystem":"","env":{"V":"\ufffd"}}}}
+`, `{"kind":"inconsistent","message":"processed inconsistent uevent","error":{"fault":1,"event":{"action":"add","devpath":"\u0000","env":{"V":"` + "\ufffd" + `"},"seqnum":2,"subsystem":""},"object":{"state":1,"devpath":"\u0000","subsystem":"","env":{"V":"` + "\ufffd" + `"}}}}
 `}, `dispatch: rejecting coldboot loop: unique error 51966 injected by the test suite
 dispatch: processed inconsistent uevent: duplicate add event on devpath "\x00"
 `, nil},