diff --git a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/lang/RustWriter.kt b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/lang/RustWriter.kt
index e95c6f7183fd1edbf6ae0a3f55389ebf6879e3a6..cb18ce105f2db39397450eaaa5ee7515df205dba 100644
--- a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/lang/RustWriter.kt
+++ b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/lang/RustWriter.kt
@@ -93,6 +93,7 @@ class RustWriter private constructor(private val filename: String, val namespace
         rustBlock("$visibility mod $moduleName") {
             write(innerWriter.toString())
         }
+        innerWriter.dependencies.forEach { addDependency(it) }
     }
 
     // TODO: refactor both of these methods & add a parent method to for_each across any field type
diff --git a/codegen/src/test/kotlin/software/amazon/smithy/rust/lang/RustWriterTest.kt b/codegen/src/test/kotlin/software/amazon/smithy/rust/lang/RustWriterTest.kt
index a9321bb9ec123738065f30b914ddadda655fb95e..27e27999114ce7a1a8a90324cb09404a15958119 100644
--- a/codegen/src/test/kotlin/software/amazon/smithy/rust/lang/RustWriterTest.kt
+++ b/codegen/src/test/kotlin/software/amazon/smithy/rust/lang/RustWriterTest.kt
@@ -5,14 +5,17 @@
 
 package software.amazon.smithy.rust.lang
 
+import io.kotest.matchers.collections.shouldContain
 import io.kotest.matchers.string.shouldContain
 import org.junit.jupiter.api.Test
 import software.amazon.smithy.codegen.core.SymbolProvider
 import software.amazon.smithy.model.Model
 import software.amazon.smithy.model.shapes.SetShape
 import software.amazon.smithy.model.shapes.StringShape
+import software.amazon.smithy.rust.codegen.lang.RustDependency
 import software.amazon.smithy.rust.codegen.lang.RustWriter
 import software.amazon.smithy.rust.codegen.lang.rustBlock
+import software.amazon.smithy.rust.codegen.smithy.RuntimeType
 import software.amazon.smithy.rust.codegen.smithy.SymbolVisitor
 import software.amazon.smithy.rust.testutil.quickTest
 import software.amazon.smithy.rust.testutil.shouldCompile
@@ -28,6 +31,18 @@ class RustWriterTest {
         sut.toString().shouldMatchResource(javaClass, "empty.rs")
     }
 
+    @Test
+    fun `inner modules correctly handle dependencies`() {
+        val sut = RustWriter.forModule("lib")
+        val requestBuilder = RuntimeType.HttpRequestBuilder
+        sut.withModule("inner") {
+            rustBlock("fn build(builer: \$T)", requestBuilder) {
+            }
+        }
+        val httpDep = RustDependency.Http.dependencies[0]
+        sut.dependencies shouldContain httpDep
+    }
+
     @Test
     fun `manually created struct`() {
         val sut = RustWriter.forModule("lib")