diff --git a/.github/workflows/dev.yml b/.github/workflows/dev.yml
index 39a3b870..0474fb42 100644
--- a/.github/workflows/dev.yml
+++ b/.github/workflows/dev.yml
@@ -160,7 +160,7 @@ jobs:
         uses: matt-ball/newman-action@master
         with:
           postmanApiKey: ${{ secrets.POSTMAN_API }}
-          collection: ./dev/postman.json
+          collection: 1898229-94807b85-ef65-4370-9144-b1a74e04cb0e
           environment: ./dev/postman_environment.json
           timeoutRequest: 15000
           delayRequest: 1000
diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index 5ea53174..2e3ea54c 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -182,7 +182,7 @@ jobs:
         uses: matt-ball/newman-action@master
         with:
           postmanApiKey: ${{ secrets.POSTMAN_API }}
-          collection: ./dev/postman.json
+          collection: 1898229-94807b85-ef65-4370-9144-b1a74e04cb0e
           environment: ./dev/postman_environment.json
           timeoutRequest: 15000
           delayRequest: 1000
diff --git a/types/null/marshal.go b/types/null/marshal.go
index 1b7a51eb..dae3e551 100644
--- a/types/null/marshal.go
+++ b/types/null/marshal.go
@@ -37,7 +37,7 @@ func (s NullString) MarshalJSON() ([]byte, error) {
 	return json.Marshal(s.String)
 }
 
-// MarshalJSON for NullInt64
+// MarshalYAML for NullInt64
 func (i NullInt64) MarshalYAML() (interface{}, error) {
 	if !i.Valid {
 		return 0, nil
@@ -45,7 +45,7 @@ func (i NullInt64) MarshalYAML() (interface{}, error) {
 	return yaml.Marshal(i.Int64)
 }
 
-// MarshalJSON for NullFloat64
+// MarshalYAML for NullFloat64
 func (f NullFloat64) MarshalYAML() (interface{}, error) {
 	if !f.Valid {
 		return 0.0, nil
@@ -53,7 +53,7 @@ func (f NullFloat64) MarshalYAML() (interface{}, error) {
 	return yaml.Marshal(f.Float64)
 }
 
-// MarshalJSON for NullBool
+// MarshalYAML for NullBool
 func (bb NullBool) MarshalYAML() (interface{}, error) {
 	if !bb.Valid {
 		return false, nil
@@ -61,7 +61,7 @@ func (bb NullBool) MarshalYAML() (interface{}, error) {
 	return yaml.Marshal(bb.Bool)
 }
 
-// MarshalJSON for NullString
+// MarshalYAML for NullString
 func (s NullString) MarshalYAML() (interface{}, error) {
 	if !s.Valid {
 		return "", nil