diff --git a/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/generators/StructureGenerator.kt b/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/generators/StructureGenerator.kt
index cd18547094b03ca7b5219db7ea95b2c6406295a0..5c9635c5a8c4f1cf4f5782e59384ca2d33458b4b 100644
--- a/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/generators/StructureGenerator.kt
+++ b/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/generators/StructureGenerator.kt
@@ -133,7 +133,8 @@ open class StructureGenerator(
         if (accessorMembers.isEmpty()) {
             return
         }
-        writer.rustBlock("impl $name") {
+        val lifetimes = lifetimeDeclaration()
+        writer.rustBlock("impl $lifetimes $name $lifetimes") {
             // Render field accessor methods
             forEachMember(accessorMembers) { member, memberName, memberSymbol ->
                 val memberType = memberSymbol.rustType()