diff --git a/MODULE.bazel b/MODULE.bazel
index 607c016..8d6f4af 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -54,10 +54,10 @@ maven.install(
     artifacts = [
         # alloy#simpleRestJson — the vendor-neutral REST/JSON protocol trait.
         "com.disneystreaming.alloy:alloy-core:0.3.40",
-        "software.amazon.smithy:smithy-build:1.73.0",
-        "software.amazon.smithy:smithy-codegen-core:1.73.0",
-        "software.amazon.smithy:smithy-protocol-test-traits:1.73.0",
-        "software.amazon.smithy:smithy-protocol-traits:1.73.0",
+        "software.amazon.smithy:smithy-build:1.74.0",
+        "software.amazon.smithy:smithy-codegen-core:1.74.0",
+        "software.amazon.smithy:smithy-protocol-test-traits:1.74.0",
+        "software.amazon.smithy:smithy-protocol-traits:1.74.0",
     ],
     lock_file = "//:maven_install.json",
     repositories = ["https://repo1.maven.org/maven2"],
diff --git a/codegen/smithy-cpp-codegen/build.gradle.kts b/codegen/smithy-cpp-codegen/build.gradle.kts
index 610d3de..bd5b217 100644
--- a/codegen/smithy-cpp-codegen/build.gradle.kts
+++ b/codegen/smithy-cpp-codegen/build.gradle.kts
@@ -219,19 +219,19 @@ tasks.withType<Test>().configureEach {
 }
 
 dependencies {
-    api("software.amazon.smithy:smithy-codegen-core:1.73.0")
-    api("software.amazon.smithy:smithy-build:1.73.0")
+    api("software.amazon.smithy:smithy-codegen-core:1.74.0")
+    api("software.amazon.smithy:smithy-build:1.74.0")
     // Trait definitions used by the fixture models.
     // alloy#simpleRestJson — the vendor-neutral REST/JSON protocol (smithy4s).
     // alloy is built against Smithy 1.58, which the whole build now pins to.
     implementation("com.disneystreaming.alloy:alloy-core:0.3.40")
-    implementation("software.amazon.smithy:smithy-protocol-traits:1.73.0")
+    implementation("software.amazon.smithy:smithy-protocol-traits:1.74.0")
     // smithy.test#http{Request,Response}Tests trait definitions.
-    implementation("software.amazon.smithy:smithy-protocol-test-traits:1.73.0")
+    implementation("software.amazon.smithy:smithy-protocol-test-traits:1.74.0")
     // The official conformance suite models (generateProtocolTests classpath only).
     // alloy's simpleRestJson conformance suite.
     protocolTestModels("com.disneystreaming.alloy:alloy-protocol-tests:0.3.40")
-    protocolTestModels("software.amazon.smithy:smithy-protocol-tests:1.73.0")
+    protocolTestModels("software.amazon.smithy:smithy-protocol-tests:1.74.0")
 
     testImplementation(platform("org.junit:junit-bom:6.1.3"))
     testImplementation("org.junit.jupiter:junit-jupiter")