diff --git a/java/google/registry/util/UrlFetchUtils.java b/java/google/registry/util/UrlFetchUtils.java
index 1ca2bc881..29f8a2575 100644
--- a/java/google/registry/util/UrlFetchUtils.java
+++ b/java/google/registry/util/UrlFetchUtils.java
@@ -79,7 +79,7 @@ public final class UrlFetchUtils {
     multipart.append("\r\n");
     multipart.append(data);
     multipart.append("\r\n");
-    multipart.append(format("--%s--", boundary));
+    multipart.append(format("--%s--\r\n", boundary));
     byte[] payload = multipart.toString().getBytes(UTF_8);
     request.addHeader(
         new HTTPHeader(CONTENT_TYPE, format("multipart/form-data; boundary=\"%s\"", boundary)));
diff --git a/javatests/google/registry/util/UrlFetchUtilsTest.java b/javatests/google/registry/util/UrlFetchUtilsTest.java
index 3c55aa498..7d505a6c1 100644
--- a/javatests/google/registry/util/UrlFetchUtilsTest.java
+++ b/javatests/google/registry/util/UrlFetchUtilsTest.java
@@ -79,13 +79,13 @@ public class UrlFetchUtilsTest {
             "multipart/form-data; "
                 + "boundary=\"------------------------------AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\"");
     assertThat(addedHeaders.get(1).getName()).isEqualTo(CONTENT_LENGTH);
-    assertThat(addedHeaders.get(1).getValue()).isEqualTo("292");
+    assertThat(addedHeaders.get(1).getValue()).isEqualTo("294");
     String payload = "--------------------------------AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\r\n"
         + "Content-Disposition: form-data; name=\"lol\"; filename=\"cat\"\r\n"
         + "Content-Type: text/csv; charset=utf-8\r\n"
         + "\r\n"
         + "The nice people at the store say hello. ヘ(◕。◕ヘ)\r\n"
-        + "--------------------------------AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA--";
+        + "--------------------------------AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA--\r\n";
     verify(request).setPayload(payload.getBytes(UTF_8));
     verifyNoMoreInteractions(request);
   }