diff --git a/examples/protocol_buffers/WORKSPACE b/examples/protocol_buffers/WORKSPACE
index 7e940cb04d..8853ce55d2 100644
--- a/examples/protocol_buffers/WORKSPACE
+++ b/examples/protocol_buffers/WORKSPACE
@@ -27,9 +27,9 @@ http_archive(
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "d0f5f605d0d656007ce6c8b5a82df3037e1d8fe8b121ed42e536f569dec16113",
-    strip_prefix = "protobuf-3.14.0",
-    urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.14.0.tar.gz"],
+    sha256 = "6aff9834fd7c540875e1836967c8d14c6897e3785a2efac629f69860fb7834ff",
+    strip_prefix = "protobuf-3.15.0",
+    urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.15.0.tar.gz"],
 )
 
 http_archive(