diff --git a/android/guava/src/com/google/common/net/HttpHeaders.java b/android/guava/src/com/google/common/net/HttpHeaders.java
index ef8f3631d1e7..581dcbb14f0d 100755
--- a/android/guava/src/com/google/common/net/HttpHeaders.java
+++ b/android/guava/src/com/google/common/net/HttpHeaders.java
@@ -349,6 +349,17 @@ private ReferrerPolicyValues() {}
   public static final String X_REQUESTED_WITH = "X-Requested-With";
   /** The HTTP {@code X-User-IP} header field name. */
   public static final String X_USER_IP = "X-User-IP";
+  /**
+   * The HTTP <a href="https://goo.gl/VKpXxa">{@code X-Download-Options}</a> header field name.
+   *
+   * <p>When the new X-Download-Options header is present with the value {@code noopen}, the user is
+   * prevented from opening a file download directly; instead, they must first save the file
+   * locally.
+   *
+   * @since NEXT
+   */
+  @Beta
+  public static final String X_DOWNLOAD_OPTIONS = "X-Download-Options";
   /** The HTTP {@code X-XSS-Protection} header field name. */
   public static final String X_XSS_PROTECTION = "X-XSS-Protection";
   /**
diff --git a/guava/src/com/google/common/net/HttpHeaders.java b/guava/src/com/google/common/net/HttpHeaders.java
index ef8f3631d1e7..581dcbb14f0d 100644
--- a/guava/src/com/google/common/net/HttpHeaders.java
+++ b/guava/src/com/google/common/net/HttpHeaders.java
@@ -349,6 +349,17 @@ private ReferrerPolicyValues() {}
   public static final String X_REQUESTED_WITH = "X-Requested-With";
   /** The HTTP {@code X-User-IP} header field name. */
   public static final String X_USER_IP = "X-User-IP";
+  /**
+   * The HTTP <a href="https://goo.gl/VKpXxa">{@code X-Download-Options}</a> header field name.
+   *
+   * <p>When the new X-Download-Options header is present with the value {@code noopen}, the user is
+   * prevented from opening a file download directly; instead, they must first save the file
+   * locally.
+   *
+   * @since NEXT
+   */
+  @Beta
+  public static final String X_DOWNLOAD_OPTIONS = "X-Download-Options";
   /** The HTTP {@code X-XSS-Protection} header field name. */
   public static final String X_XSS_PROTECTION = "X-XSS-Protection";
   /**