diff --git a/closure/goog/base.js b/closure/goog/base.js
index <HASH>..<HASH> 100644
--- a/closure/goog/base.js
+++ b/closure/goog/base.js
@@ -2529,6 +2529,9 @@ goog.inherits = function(childCtor, parentCtor) {
  * @return {*} The return value of the superclass method.
  * @suppress {es5Strict} This method can not be used in strict mode, but
  *     all Closure Library consumers must depend on this file.
+ * @deprecated goog.base is not strict mode compatible.  Prefer the static
+ *     "base" method added to the constructor by goog.inherits
+ *     or ES6 classes and the "super" keyword.
  */
 goog.base = function(me, opt_methodName, var_args) {
   var caller = arguments.callee.caller;
Mark goog.base as deprecated.  It has been deprecated for a long time but wasn't annotated that way.

RELNOTES: goog.base is deprecated.

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