diff --git a/examples/grpc-bridge/client/requirements.txt b/examples/grpc-bridge/client/requirements.txt
index aca3d1c8cc88..35d648d2aa96 100644
--- a/examples/grpc-bridge/client/requirements.txt
+++ b/examples/grpc-bridge/client/requirements.txt
@@ -110,33 +110,31 @@ idna==3.2 \
     --hash=sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a \
     --hash=sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3
     # via requests
-protobuf==3.19.4 \
-    --hash=sha256:072fbc78d705d3edc7ccac58a62c4c8e0cec856987da7df8aca86e647be4e35c \
-    --hash=sha256:09297b7972da685ce269ec52af761743714996b4381c085205914c41fcab59fb \
-    --hash=sha256:16f519de1313f1b7139ad70772e7db515b1420d208cb16c6d7858ea989fc64a9 \
-    --hash=sha256:1c91ef4110fdd2c590effb5dca8fdbdcb3bf563eece99287019c4204f53d81a4 \
-    --hash=sha256:3112b58aac3bac9c8be2b60a9daf6b558ca3f7681c130dcdd788ade7c9ffbdca \
-    --hash=sha256:36cecbabbda242915529b8ff364f2263cd4de7c46bbe361418b5ed859677ba58 \
-    --hash=sha256:4276cdec4447bd5015453e41bdc0c0c1234eda08420b7c9a18b8d647add51e4b \
-    --hash=sha256:435bb78b37fc386f9275a7035fe4fb1364484e38980d0dd91bc834a02c5ec909 \
-    --hash=sha256:48ed3877fa43e22bcacc852ca76d4775741f9709dd9575881a373bd3e85e54b2 \
-    --hash=sha256:54a1473077f3b616779ce31f477351a45b4fef8c9fd7892d6d87e287a38df368 \
-    --hash=sha256:69da7d39e39942bd52848438462674c463e23963a1fdaa84d88df7fbd7e749b2 \
-    --hash=sha256:6cbc312be5e71869d9d5ea25147cdf652a6781cf4d906497ca7690b7b9b5df13 \
-    --hash=sha256:7bb03bc2873a2842e5ebb4801f5c7ff1bfbdf426f85d0172f7644fcda0671ae0 \
-    --hash=sha256:7ca7da9c339ca8890d66958f5462beabd611eca6c958691a8fe6eccbd1eb0c6e \
-    --hash=sha256:835a9c949dc193953c319603b2961c5c8f4327957fe23d914ca80d982665e8ee \
-    --hash=sha256:84123274d982b9e248a143dadd1b9815049f4477dc783bf84efe6250eb4b836a \
-    --hash=sha256:8961c3a78ebfcd000920c9060a262f082f29838682b1f7201889300c1fbe0616 \
-    --hash=sha256:96bd766831596d6014ca88d86dc8fe0fb2e428c0b02432fd9db3943202bf8c5e \
-    --hash=sha256:9df0c10adf3e83015ced42a9a7bd64e13d06c4cf45c340d2c63020ea04499d0a \
-    --hash=sha256:b38057450a0c566cbd04890a40edf916db890f2818e8682221611d78dc32ae26 \
-    --hash=sha256:bd95d1dfb9c4f4563e6093a9aa19d9c186bf98fa54da5252531cc0d3a07977e7 \
-    --hash=sha256:c1068287025f8ea025103e37d62ffd63fec8e9e636246b89c341aeda8a67c934 \
-    --hash=sha256:c438268eebb8cf039552897d78f402d734a404f1360592fef55297285f7f953f \
-    --hash=sha256:cdc076c03381f5c1d9bb1abdcc5503d9ca8b53cf0a9d31a9f6754ec9e6c8af0f \
-    --hash=sha256:f358aa33e03b7a84e0d91270a4d4d8f5df6921abe99a377828839e8ed0c04e07 \
-    --hash=sha256:f51d5a9f137f7a2cec2d326a74b6e3fc79d635d69ffe1b036d39fc7d75430d37
+protobuf==3.20.1 \
+    --hash=sha256:06059eb6953ff01e56a25cd02cca1a9649a75a7e65397b5b9b4e929ed71d10cf \
+    --hash=sha256:097c5d8a9808302fb0da7e20edf0b8d4703274d140fd25c5edabddcde43e081f \
+    --hash=sha256:284f86a6207c897542d7e956eb243a36bb8f9564c1742b253462386e96c6b78f \
+    --hash=sha256:32ca378605b41fd180dfe4e14d3226386d8d1b002ab31c969c366549e66a2bb7 \
+    --hash=sha256:3cc797c9d15d7689ed507b165cd05913acb992d78b379f6014e013f9ecb20996 \
+    --hash=sha256:62f1b5c4cd6c5402b4e2d63804ba49a327e0c386c99b1675c8a0fefda23b2067 \
+    --hash=sha256:69ccfdf3657ba59569c64295b7d51325f91af586f8d5793b734260dfe2e94e2c \
+    --hash=sha256:6f50601512a3d23625d8a85b1638d914a0970f17920ff39cec63aaef80a93fb7 \
+    --hash=sha256:7403941f6d0992d40161aa8bb23e12575637008a5a02283a930addc0508982f9 \
+    --hash=sha256:755f3aee41354ae395e104d62119cb223339a8f3276a0cd009ffabfcdd46bb0c \
+    --hash=sha256:77053d28427a29987ca9caf7b72ccafee011257561259faba8dd308fda9a8739 \
+    --hash=sha256:7e371f10abe57cee5021797126c93479f59fccc9693dafd6bd5633ab67808a91 \
+    --hash=sha256:9016d01c91e8e625141d24ec1b20fed584703e527d28512aa8c8707f105a683c \
+    --hash=sha256:9be73ad47579abc26c12024239d3540e6b765182a91dbc88e23658ab71767153 \
+    --hash=sha256:adc31566d027f45efe3f44eeb5b1f329da43891634d61c75a5944e9be6dd42c9 \
+    --hash=sha256:adfc6cf69c7f8c50fd24c793964eef18f0ac321315439d94945820612849c388 \
+    --hash=sha256:af0ebadc74e281a517141daad9d0f2c5d93ab78e9d455113719a45a49da9db4e \
+    --hash=sha256:cb29edb9eab15742d791e1025dd7b6a8f6fcb53802ad2f6e3adcb102051063ab \
+    --hash=sha256:cd68be2559e2a3b84f517fb029ee611546f7812b1fdd0aa2ecc9bc6ec0e4fdde \
+    --hash=sha256:cdee09140e1cd184ba9324ec1df410e7147242b94b5f8b0c64fc89e38a8ba531 \
+    --hash=sha256:db977c4ca738dd9ce508557d4fce0f5aebd105e158c725beec86feb1f6bc20d8 \
+    --hash=sha256:dd5789b2948ca702c17027c84c2accb552fc30f4622a98ab5c51fcfe8c50d3e7 \
+    --hash=sha256:e250a42f15bf9d5b09fe1b293bdba2801cd520a9f5ea2d7fb7536d4441811d20 \
+    --hash=sha256:ff8d8fa42675249bb456f5db06c00de6c2f4c27a065955917b28c4f15978b9c3
     # via
     #   -r requirements.in
     #   grpcio-tools