diff --git a/examples/grpc-bridge/client/requirements.txt b/examples/grpc-bridge/client/requirements.txt
index be2b75815c9b8..498b05d241fa8 100644
--- a/examples/grpc-bridge/client/requirements.txt
+++ b/examples/grpc-bridge/client/requirements.txt
@@ -110,33 +110,30 @@ 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==3.20.3 \
+    --hash=sha256:03038ac1cfbc41aa21f6afcbcd357281d7521b4157926f30ebecc8d4ea59dcb7 \
+    --hash=sha256:28545383d61f55b57cf4df63eebd9827754fd2dc25f80c5253f9184235db242c \
+    --hash=sha256:2e3427429c9cffebf259491be0af70189607f365c2f41c7c3764af6f337105f2 \
+    --hash=sha256:398a9e0c3eaceb34ec1aee71894ca3299605fa8e761544934378bbc6c97de23b \
+    --hash=sha256:44246bab5dd4b7fbd3c0c80b6f16686808fab0e4aca819ade6e8d294a29c7050 \
+    --hash=sha256:447d43819997825d4e71bf5769d869b968ce96848b6479397e29fc24c4a5dfe9 \
+    --hash=sha256:67a3598f0a2dcbc58d02dd1928544e7d88f764b47d4a286202913f0b2801c2e7 \
+    --hash=sha256:74480f79a023f90dc6e18febbf7b8bac7508420f2006fabd512013c0c238f454 \
+    --hash=sha256:819559cafa1a373b7096a482b504ae8a857c89593cf3a25af743ac9ecbd23480 \
+    --hash=sha256:899dc660cd599d7352d6f10d83c95df430a38b410c1b66b407a6b29265d66469 \
+    --hash=sha256:8c0c984a1b8fef4086329ff8dd19ac77576b384079247c770f29cc8ce3afa06c \
+    --hash=sha256:9aae4406ea63d825636cc11ffb34ad3379335803216ee3a856787bcf5ccc751e \
+    --hash=sha256:a7ca6d488aa8ff7f329d4c545b2dbad8ac31464f1d8b1c87ad1346717731e4db \
+    --hash=sha256:b6cc7ba72a8850621bfec987cb72623e703b7fe2b9127a161ce61e61558ad905 \
+    --hash=sha256:bf01b5720be110540be4286e791db73f84a2b721072a3711efff6c324cdf074b \
+    --hash=sha256:c02ce36ec760252242a33967d51c289fd0e1c0e6e5cc9397e2279177716add86 \
+    --hash=sha256:d9e4432ff660d67d775c66ac42a67cf2453c27cb4d738fc22cb53b5d84c135d4 \
+    --hash=sha256:daa564862dd0d39c00f8086f88700fdbe8bc717e993a21e90711acfed02f2402 \
+    --hash=sha256:de78575669dddf6099a8a0f46a27e82a1783c557ccc38ee620ed8cc96d3be7d7 \
+    --hash=sha256:e64857f395505ebf3d2569935506ae0dfc4a15cb80dc25261176c784662cdcc4 \
+    --hash=sha256:e67f9af1b607eb3a89aafc9bc68a9d1172aae788b2445cb9fd781bd97531f1f1 \
+    --hash=sha256:f4bd856d702e5b0d96a00ec6b307b0f51c1982c2bf9c0052cf9019e9a544ba99 \
+    --hash=sha256:f4c42102bc82a51108e449cbb32b19b180022941c727bac0cfd50170341f16ee
     # via
     #   -r requirements.in
     #   grpcio-tools