diff --git a/.changeset/fix-schema-trait-computed-keys.md b/.changeset/fix-schema-trait-computed-keys.md
new file mode 100644
index 00000000000..3ac6d02f034
--- /dev/null
+++ b/.changeset/fix-schema-trait-computed-keys.md
@@ -0,0 +1,5 @@
+---
+"@smithy/core": patch
+---
+
+fix(codegen): use literal string keys in SchemaTraitWriter to fix esbuild tree-shaking
diff --git a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriter.java b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriter.java
index f7e3951345f..c6e9bbf6361 100644
--- a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriter.java
+++ b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriter.java
@@ -86,8 +86,8 @@ private void writeTraitsObject() {
                 }
                 buffer.append(
                     """
-                    [%s]: %s,\s""".formatted(
-                        stringStore.var(shapeId.getName()),
+                    "%s": %s,\s""".formatted(
+                        shapeId.getName(),
                         traitGenerator.serializeTraitData(trait, stringStore)
                     )
                 );
diff --git a/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriterTest.java b/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriterTest.java
index 36b2566d0d0..929d91524b1 100644
--- a/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriterTest.java
+++ b/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/schema/SchemaTraitWriterTest.java
@@ -40,7 +40,7 @@ void testToString() {
             String codeGeneration = subject.toString();
             assertEquals(
                 """
-                { [_s]: 1 }""",
+                { "streaming": 1 }""",
                 codeGeneration
             );
         }