diff --git a/java/com/google/turbine/binder/ClassPathBinder.java b/java/com/google/turbine/binder/ClassPathBinder.java
index 9efe7531..af59bcac 100644
--- a/java/com/google/turbine/binder/ClassPathBinder.java
+++ b/java/com/google/turbine/binder/ClassPathBinder.java
@@ -47,6 +47,12 @@ public final class ClassPathBinder {
    */
   public static final String TRANSITIVE_PREFIX = "META-INF/TRANSITIVE/";
 
+  /**
+   * The suffix for repackaged transitive dependencies; see {@link
+   * com.google.turbine.deps.Transitive}.
+   */
+  public static final String TRANSITIVE_SUFFIX = ".turbine";
+
   /** Creates an environment containing symbols in the given classpath. */
   public static ClassPath bindClasspath(Collection<Path> paths) throws IOException {
     // TODO(cushon): this is going to require an env eventually,
@@ -110,14 +116,14 @@ private static void bindJar(
     // TODO(cushon): don't leak file descriptors
     for (Zip.Entry ze : new Zip.ZipIterable(path)) {
       String name = ze.name();
-      if (!name.endsWith(".class")) {
-        resources.put(name, toByteArrayOrDie(ze));
-        continue;
-      }
       if (name.startsWith(TRANSITIVE_PREFIX)) {
+        if (!name.endsWith(TRANSITIVE_SUFFIX)) {
+          continue;
+        }
         ClassSymbol sym =
             new ClassSymbol(
-                name.substring(TRANSITIVE_PREFIX.length(), name.length() - ".class".length()));
+                name.substring(
+                    TRANSITIVE_PREFIX.length(), name.length() - TRANSITIVE_SUFFIX.length()));
         transitive.computeIfAbsent(
             sym,
             new Function<ClassSymbol, BytecodeBoundClass>() {
@@ -128,6 +134,10 @@ public BytecodeBoundClass apply(ClassSymbol sym) {
             });
         continue;
       }
+      if (!name.endsWith(".class")) {
+        resources.put(name, toByteArrayOrDie(ze));
+        continue;
+      }
       if (name.substring(name.lastIndexOf('/') + 1).equals("module-info.class")) {
         ModuleInfo moduleInfo =
             BytecodeBinder.bindModuleInfo(path.toString(), toByteArrayOrDie(ze));
diff --git a/java/com/google/turbine/main/Main.java b/java/com/google/turbine/main/Main.java
index 3725834d..226686fe 100644
--- a/java/com/google/turbine/main/Main.java
+++ b/java/com/google/turbine/main/Main.java
@@ -421,7 +421,9 @@ private static void writeOutput(
       }
       for (Map.Entry<String, byte[]> entry : transitive.entrySet()) {
         addEntry(
-            jos, ClassPathBinder.TRANSITIVE_PREFIX + entry.getKey() + ".class", entry.getValue());
+            jos,
+            ClassPathBinder.TRANSITIVE_PREFIX + entry.getKey() + ClassPathBinder.TRANSITIVE_SUFFIX,
+            entry.getValue());
       }
       for (Map.Entry<String, byte[]> entry : lowered.entrySet()) {
         addEntry(jos, entry.getKey() + ".class", entry.getValue());
diff --git a/javatests/com/google/turbine/deps/TransitiveTest.java b/javatests/com/google/turbine/deps/TransitiveTest.java
index aab729a1..69d719b6 100644
--- a/javatests/com/google/turbine/deps/TransitiveTest.java
+++ b/javatests/com/google/turbine/deps/TransitiveTest.java
@@ -127,13 +127,13 @@ public void transitive() throws Exception {
         .containsExactly(
             "META-INF/",
             "META-INF/MANIFEST.MF",
-            "META-INF/TRANSITIVE/a/A.class",
-            "META-INF/TRANSITIVE/a/A$Anno.class",
-            "META-INF/TRANSITIVE/a/A$Inner.class",
+            "META-INF/TRANSITIVE/a/A.turbine",
+            "META-INF/TRANSITIVE/a/A$Anno.turbine",
+            "META-INF/TRANSITIVE/a/A$Inner.turbine",
             "b/B.class")
         .inOrder();
 
-    ClassFile a = ClassReader.read(null, readJar(libb).get("META-INF/TRANSITIVE/a/A.class"));
+    ClassFile a = ClassReader.read(null, readJar(libb).get("META-INF/TRANSITIVE/a/A.turbine"));
     // methods and non-constant fields are removed
     assertThat(getOnlyElement(a.fields()).name()).isEqualTo("CONST");
     assertThat(a.methods()).isEmpty();
@@ -142,7 +142,7 @@ public void transitive() throws Exception {
 
     // annotation interface methods are preserved
     assertThat(
-            ClassReader.read(null, readJar(libb).get("META-INF/TRANSITIVE/a/A$Anno.class"))
+            ClassReader.read(null, readJar(libb).get("META-INF/TRANSITIVE/a/A$Anno.turbine"))
                 .methods())
         .hasSize(1);
 
@@ -186,10 +186,10 @@ public void transitive() throws Exception {
         .containsExactly(
             "META-INF/",
             "META-INF/MANIFEST.MF",
-            "META-INF/TRANSITIVE/b/B.class",
-            "META-INF/TRANSITIVE/a/A.class",
-            "META-INF/TRANSITIVE/a/A$Anno.class",
-            "META-INF/TRANSITIVE/a/A$Inner.class",
+            "META-INF/TRANSITIVE/b/B.turbine",
+            "META-INF/TRANSITIVE/a/A.turbine",
+            "META-INF/TRANSITIVE/a/A$Anno.turbine",
+            "META-INF/TRANSITIVE/a/A$Inner.turbine",
             "c/C.class")
         .inOrder();
 
@@ -256,8 +256,8 @@ public void anonymous() throws Exception {
         .containsExactly(
             "META-INF/",
             "META-INF/MANIFEST.MF",
-            "META-INF/TRANSITIVE/a/A.class",
-            "META-INF/TRANSITIVE/a/A$I.class",
+            "META-INF/TRANSITIVE/a/A.turbine",
+            "META-INF/TRANSITIVE/a/A$I.turbine",
             "b/B.class")
         .inOrder();
   }
@@ -297,9 +297,9 @@ public void childClass() throws Exception {
         .containsExactly(
             "META-INF/",
             "META-INF/MANIFEST.MF",
-            "META-INF/TRANSITIVE/a/A$I.class",
-            "META-INF/TRANSITIVE/a/S.class",
-            "META-INF/TRANSITIVE/a/A.class",
+            "META-INF/TRANSITIVE/a/A$I.turbine",
+            "META-INF/TRANSITIVE/a/S.turbine",
+            "META-INF/TRANSITIVE/a/A.turbine",
             "b/B$I.class",
             "b/B.class")
         .inOrder();
@@ -338,7 +338,7 @@ public void packageInfo() throws Exception {
         .containsExactly(
             "META-INF/",
             "META-INF/MANIFEST.MF",
-            "META-INF/TRANSITIVE/p/package-info.class",
+            "META-INF/TRANSITIVE/p/package-info.turbine",
             "p/P.class")
         .inOrder();
   }