diff --git a/CHANGELOG.md b/CHANGELOG.md
index c98471fafaa..10595e27bbb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+Release v1.44.43 (2022-06-27)
+===
+
+### Service Client Updates
+* `service/iot`: Updates service API
+  * This release ease the restriction for the input of tag value to align with AWS standard, now instead of min length 1, we change it to min length 0.
+
 Release v1.44.42 (2022-06-24)
 ===
 
diff --git a/aws/version.go b/aws/version.go
index a8a2ed57211..e6612ead486 100644
--- a/aws/version.go
+++ b/aws/version.go
@@ -5,4 +5,4 @@ package aws
 const SDKName = "aws-sdk-go"
 
 // SDKVersion is the version of this SDK
-const SDKVersion = "1.44.42"
+const SDKVersion = "1.44.43"
diff --git a/models/apis/iot/2015-05-28/api-2.json b/models/apis/iot/2015-05-28/api-2.json
index 9ec9b59e5d5..ab61f19b311 100644
--- a/models/apis/iot/2015-05-28/api-2.json
+++ b/models/apis/iot/2015-05-28/api-2.json
@@ -12296,7 +12296,7 @@
     "TagValue":{
       "type":"string",
       "max":256,
-      "min":1
+      "min":0
     },
     "Target":{"type":"string"},
     "TargetArn":{
diff --git a/service/iot/api.go b/service/iot/api.go
index d502100c2f4..f0b4b6db513 100644
--- a/service/iot/api.go
+++ b/service/iot/api.go
@@ -61250,7 +61250,7 @@ type Tag struct {
 	Key *string `min:"1" type:"string" required:"true"`
 
 	// The tag's value.
-	Value *string `min:"1" type:"string"`
+	Value *string `type:"string"`
 }
 
 // String returns the string representation.
@@ -61280,9 +61280,6 @@ func (s *Tag) Validate() error {
 	if s.Key != nil && len(*s.Key) < 1 {
 		invalidParams.Add(request.NewErrParamMinLen("Key", 1))
 	}
-	if s.Value != nil && len(*s.Value) < 1 {
-		invalidParams.Add(request.NewErrParamMinLen("Value", 1))
-	}
 
 	if invalidParams.Len() > 0 {
 		return invalidParams