diff --git a/api/client/builder/BUILD.bazel b/api/client/builder/BUILD.bazel
index 0fcc959c3203..204c9c14f48f 100644
--- a/api/client/builder/BUILD.bazel
+++ b/api/client/builder/BUILD.bazel
@@ -30,7 +30,7 @@ go_test(
         "client_test.go",
         "types_test.go",
     ],
-    data = glob(["testing/testdata/**"]),
+    data = glob(["testdata/**"]),
     embed = [":go_default_library"],
     deps = [
         "//config/params:go_default_library",
diff --git a/api/client/builder/testing/testdata/blinded-block.json b/api/client/builder/testdata/blinded-block.json
similarity index 100%
rename from api/client/builder/testing/testdata/blinded-block.json
rename to api/client/builder/testdata/blinded-block.json
diff --git a/api/client/builder/testing/testdata/execution-payload.json b/api/client/builder/testdata/execution-payload.json
similarity index 100%
rename from api/client/builder/testing/testdata/execution-payload.json
rename to api/client/builder/testdata/execution-payload.json
diff --git a/api/client/builder/types_test.go b/api/client/builder/types_test.go
index 5555a5f25012..2cbe450c855e 100644
--- a/api/client/builder/types_test.go
+++ b/api/client/builder/types_test.go
@@ -678,7 +678,7 @@ func TestUint256Unmarshal(t *testing.T) {
 }
 
 func TestMarshalBlindedBeaconBlockBodyBellatrix(t *testing.T) {
-	expected, err := os.ReadFile("testing/testdata/blinded-block.json")
+	expected, err := os.ReadFile("testdata/blinded-block.json")
 	require.NoError(t, err)
 	b := &BlindedBeaconBlockBellatrix{BlindedBeaconBlockBellatrix: &eth.BlindedBeaconBlockBellatrix{
 		Slot:          1,
@@ -730,7 +730,7 @@ func TestRoundTripProtoUint256(t *testing.T) {
 }
 
 func TestExecutionPayloadHeaderRoundtrip(t *testing.T) {
-	expected, err := os.ReadFile("testing/testdata/execution-payload.json")
+	expected, err := os.ReadFile("testdata/execution-payload.json")
 	require.NoError(t, err)
 	hu := &ExecutionPayloadHeader{}
 	require.NoError(t, json.Unmarshal(expected, hu))