diff --git a/aws-auth-cognito/src/test/resources/feature-test/testsuites/deleteUser/AuthException_is_thrown_when_deleteUser_API_call_fails.json b/aws-auth-cognito/src/test/resources/feature-test/testsuites/deleteUser/AuthException_is_thrown_when_deleteUser_API_call_fails.json
index e2d6877085..2ad8b411a5 100644
--- a/aws-auth-cognito/src/test/resources/feature-test/testsuites/deleteUser/AuthException_is_thrown_when_deleteUser_API_call_fails.json
+++ b/aws-auth-cognito/src/test/resources/feature-test/testsuites/deleteUser/AuthException_is_thrown_when_deleteUser_API_call_fails.json
@@ -33,9 +33,9 @@
                 "recoverySuggestion": "Check whether the given values are correct and the user is authorized to perform the operation.",
                 "cause": {
                     "errorType": "NotAuthorizedException",
-                    "errorMessage": null
+                    "errorMessage": "Error type: Client, Protocol response: (empty response)"
                 }
             }
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_globalSignOut_returns_partial_success_with_revoke_token_error.json b/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_globalSignOut_returns_partial_success_with_revoke_token_error.json
index ece33c3204..d92ad51239 100644
--- a/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_globalSignOut_returns_partial_success_with_revoke_token_error.json
+++ b/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_globalSignOut_returns_partial_success_with_revoke_token_error.json
@@ -45,7 +45,7 @@
                         "recoverySuggestion": "See attached exception for more details. RevokeToken can be retried using the CognitoIdentityProviderClient accessible from the escape hatch.",
                         "cause": {
                             "errorType": "NotAuthorizedException",
-                            "errorMessage": null
+                            "errorMessage": "Error type: Client, Protocol response: (empty response)"
                         }
                     },
                     "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VySWQiLCJ1c2VybmFtZSI6InVzZXJuYW1lIiwiZXhwIjoxNTE2MjM5MDIyLCJvcmlnaW5fanRpIjoib3JpZ2luX2p0aSJ9.Xqa-vjJe5wwwsqeRAdHf8kTBn_rYSkDn2lB7xj9Z1xU"
@@ -54,4 +54,4 @@
             }
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_global_signOut_error_returns_partial_success_with_global_sign_out_error.json b/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_global_signOut_error_returns_partial_success_with_global_sign_out_error.json
index 80b7fcb772..f828df831e 100644
--- a/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_global_signOut_error_returns_partial_success_with_global_sign_out_error.json
+++ b/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_global_signOut_error_returns_partial_success_with_global_sign_out_error.json
@@ -37,7 +37,7 @@
                         "recoverySuggestion": "See attached exception for more details. GlobalSignOut can be retried using the CognitoIdentityProviderClient accessible from the escape hatch.",
                         "cause": {
                             "errorType": "NotAuthorizedException",
-                            "errorMessage": null
+                            "errorMessage": "Error type: Client, Protocol response: (empty response)"
                         }
                     }
                 },
@@ -64,4 +64,4 @@
             }
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_signOut_returns_partial_success_with_revoke_token_error.json b/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_signOut_returns_partial_success_with_revoke_token_error.json
index 857211df4b..6443ba2fe3 100644
--- a/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_signOut_returns_partial_success_with_revoke_token_error.json
+++ b/aws-auth-cognito/src/test/resources/feature-test/testsuites/signOut/Test_that_signOut_returns_partial_success_with_revoke_token_error.json
@@ -38,7 +38,7 @@
                         "recoverySuggestion": "See attached exception for more details. RevokeToken can be retried using the CognitoIdentityProviderClient accessible from the escape hatch.",
                         "cause": {
                             "errorType": "NotAuthorizedException",
-                            "errorMessage": null
+                            "errorMessage": "Error type: Client, Protocol response: (empty response)"
                         }
                     },
                     "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VySWQiLCJ1c2VybmFtZSI6InVzZXJuYW1lIiwiZXhwIjoxNTE2MjM5MDIyLCJvcmlnaW5fanRpIjoib3JpZ2luX2p0aSJ9.Xqa-vjJe5wwwsqeRAdHf8kTBn_rYSkDn2lB7xj9Z1xU"
@@ -47,4 +47,4 @@
             }
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 2108b9de81..c9d8a2eff8 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -15,9 +15,9 @@ androidx-test-junit = "1.1.2"
 androidx-test-orchestrator = "1.4.2"
 androidx-test-runner = "1.3.0"
 androidx-workmanager = "2.7.1"
-aws-kotlin = "1.0.44" # ensure proper aws-smithy version also set
+aws-kotlin = "1.2.8" # ensure proper aws-smithy version also set
 aws-sdk = "2.62.2"
-aws-smithy = "1.0.11" # ensure proper aws-kotlin version also set
+aws-smithy = "1.2.2" # ensure proper aws-kotlin version also set
 binary-compatibility-validator = "0.14.0"
 coroutines = "1.7.3"
 desugar = "1.2.0"