diff --git a/.changes/5a190de6-e9e5-4908-9bf9-62c34cf254f9.json b/.changes/5a190de6-e9e5-4908-9bf9-62c34cf254f9.json
new file mode 100644
index 00000000000..0c14a343e9b
--- /dev/null
+++ b/.changes/5a190de6-e9e5-4908-9bf9-62c34cf254f9.json
@@ -0,0 +1,8 @@
+{
+    "id": "5a190de6-e9e5-4908-9bf9-62c34cf254f9",
+    "type": "bugfix",
+    "description": "Bump the **smithy-kotlin** version to pick up a [bugfix for Endpoint Discovery](https://github.com/smithy-lang/smithy-kotlin/pull/1240)",
+    "issues": [
+        "awslabs/aws-sdk-kotlin#1413"
+    ]
+}
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 1ff3762cfff..3feadf9b887 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -12,8 +12,8 @@ atomicfu-version = "0.25.0"
 binary-compatibility-validator-version = "0.16.3"
 
 # smithy-kotlin codegen and runtime are versioned separately
-smithy-kotlin-runtime-version = "1.4.2"
-smithy-kotlin-codegen-version = "0.34.2"
+smithy-kotlin-runtime-version = "1.4.3"
+smithy-kotlin-codegen-version = "0.34.3"
 
 # codegen
 smithy-version = "1.53.0"