diff --git a/.changes/384bc620-5a1e-40d8-9e12-c410658157c3.json b/.changes/384bc620-5a1e-40d8-9e12-c410658157c3.json
new file mode 100644
index 00000000000..bf1bea0f368
--- /dev/null
+++ b/.changes/384bc620-5a1e-40d8-9e12-c410658157c3.json
@@ -0,0 +1,8 @@
+{
+    "id": "384bc620-5a1e-40d8-9e12-c410658157c3",
+    "type": "bugfix",
+    "description": "Upgrade smithy-kotlin to 0.10.0 which upgrades to ktor-2.x. This is considered a **breaking change** as it may reverse the issue described in #480 and break ktor-1.x users.",
+    "issues": [
+        "awslabs/aws-sdk-kotlin#480"
+    ]
+}
diff --git a/gradle.properties b/gradle.properties
index 787c580f068..3fbc03a3072 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -12,7 +12,7 @@ sdkVersion=0.16.0-SNAPSHOT
 smithyVersion=1.17.0
 smithyGradleVersion=0.5.3
 # smithy-kotlin codegen and runtime are versioned together
-smithyKotlinVersion=0.9.2
+smithyKotlinVersion=0.10.0
 
 # kotlin
 kotlinVersion=1.6.21