diff --git a/codegen/gradle.properties b/codegen/gradle.properties
new file mode 100644
index 00000000000..ba39af2676d
--- /dev/null
+++ b/codegen/gradle.properties
@@ -0,0 +1 @@
+smithyVersion=1.14.0
diff --git a/codegen/protocol-test-codegen/build.gradle.kts b/codegen/protocol-test-codegen/build.gradle.kts
index 483f949a668..d4cdaef6060 100644
--- a/codegen/protocol-test-codegen/build.gradle.kts
+++ b/codegen/protocol-test-codegen/build.gradle.kts
@@ -15,12 +15,14 @@
 
 import software.amazon.smithy.gradle.tasks.SmithyBuild
 
+val smithyVersion: String by project
+
 plugins {
     id("software.amazon.smithy") version "0.5.3"
 }
 
 dependencies {
-    implementation("software.amazon.smithy:smithy-aws-protocol-tests:[1.14.0,1.15.0[")
+    implementation("software.amazon.smithy:smithy-aws-protocol-tests:$smithyVersion")
     implementation(project(":smithy-aws-go-codegen"))
 }
 
diff --git a/codegen/sdk-codegen/build.gradle.kts b/codegen/sdk-codegen/build.gradle.kts
index 41f06458e2f..b460f941410 100644
--- a/codegen/sdk-codegen/build.gradle.kts
+++ b/codegen/sdk-codegen/build.gradle.kts
@@ -18,11 +18,11 @@ import software.amazon.smithy.model.node.Node
 import software.amazon.smithy.model.shapes.ServiceShape
 import software.amazon.smithy.gradle.tasks.SmithyBuild
 import software.amazon.smithy.aws.traits.ServiceTrait
-import kotlin.streams.toList
 
 buildscript {
+    val smithyVersion: String by project
     dependencies {
-        "classpath"("software.amazon.smithy:smithy-aws-traits:[1.13.1,2.0.0[")
+        "classpath"("software.amazon.smithy:smithy-aws-traits:$smithyVersion")
     }
 }
 
diff --git a/codegen/smithy-aws-go-codegen/build.gradle.kts b/codegen/smithy-aws-go-codegen/build.gradle.kts
index ac1631a8a7e..d713eeefcad 100644
--- a/codegen/smithy-aws-go-codegen/build.gradle.kts
+++ b/codegen/smithy-aws-go-codegen/build.gradle.kts
@@ -13,6 +13,8 @@
  * permissions and limitations under the License.
  */
 
+val smithyVersion: String by project
+
 plugins {
     `java-library`
     jacoco
@@ -32,9 +34,9 @@ tasks.withType<Test> {
 }
 
 dependencies {
-    api("software.amazon.smithy:smithy-aws-traits:[1.14.0,2.0.0[")
-    api("software.amazon.smithy:smithy-aws-iam-traits:[1.14.0,2.0.0[")
-    api("software.amazon.smithy:smithy-aws-cloudformation-traits:[1.14.0,2.0.0[")
+    api("software.amazon.smithy:smithy-aws-traits:$smithyVersion")
+    api("software.amazon.smithy:smithy-aws-iam-traits:$smithyVersion")
+    api("software.amazon.smithy:smithy-aws-cloudformation-traits:$smithyVersion")
     api("software.amazon.smithy.go:smithy-go-codegen:0.1.0")
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.4.0")
     testImplementation("org.junit.jupiter:junit-jupiter-engine:5.4.0")