diff --git a/examples/protocol_buffers/WORKSPACE b/examples/protocol_buffers/WORKSPACE
index 45b39e34f7..26f0bcccd4 100644
--- a/examples/protocol_buffers/WORKSPACE
+++ b/examples/protocol_buffers/WORKSPACE
@@ -27,9 +27,9 @@ http_archive(
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "036d66d6eec216160dd898cfb162e9d82c1904627642667cc32b104d407bb411",
-    strip_prefix = "protobuf-3.17.1",
-    urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.17.1.tar.gz"],
+    sha256 = "c6003e1d2e7fefa78a3039f19f383b4f3a61e81be8c19356f85b6461998ad3db",
+    strip_prefix = "protobuf-3.17.3",
+    urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.17.3.tar.gz"],
 )
 
 http_archive(