diff --git a/.kokoro/requirements.txt b/.kokoro/requirements.txt
index 6d890479..1f8c2f12 100644
--- a/.kokoro/requirements.txt
+++ b/.kokoro/requirements.txt
@@ -386,18 +386,18 @@ packaging==23.2 \
     --hash=sha256:048fb0e9405036518eaaf48a55953c750c11e1a1b68e0dd1a9d62ed0c092cfc5 \
     --hash=sha256:8c491190033a9af7e1d931d0b5dacc2ef47509b34dd0de67ed209b5203fc88c7
     # via gcp-releasetool
-protobuf==4.25.0 \
-    --hash=sha256:1a3ba712877e6d37013cdc3476040ea1e313a6c2e1580836a94f76b3c176d575 \
-    --hash=sha256:1a53d6f64b00eecf53b65ff4a8c23dc95df1fa1e97bb06b8122e5a64f49fc90a \
-    --hash=sha256:32ac2100b0e23412413d948c03060184d34a7c50b3e5d7524ee96ac2b10acf51 \
-    --hash=sha256:5c1203ac9f50e4853b0a0bfffd32c67118ef552a33942982eeab543f5c634395 \
-    --hash=sha256:63714e79b761a37048c9701a37438aa29945cd2417a97076048232c1df07b701 \
-    --hash=sha256:683dc44c61f2620b32ce4927de2108f3ebe8ccf2fd716e1e684e5a50da154054 \
-    --hash=sha256:68f7caf0d4f012fd194a301420cf6aa258366144d814f358c5b32558228afa7c \
-    --hash=sha256:b2cf8b5d381f9378afe84618288b239e75665fe58d0f3fd5db400959274296e9 \
-    --hash=sha256:c40ff8f00aa737938c5378d461637d15c442a12275a81019cc2fef06d81c9419 \
-    --hash=sha256:cf21faba64cd2c9a3ed92b7a67f226296b10159dbb8fbc5e854fc90657d908e4 \
-    --hash=sha256:d94a33db8b7ddbd0af7c467475fb9fde0c705fb315a8433c0e2020942b863a1f
+protobuf==4.25.1 \
+    --hash=sha256:0bf384e75b92c42830c0a679b0cd4d6e2b36ae0cf3dbb1e1dfdda48a244f4bcd \
+    --hash=sha256:0f881b589ff449bf0b931a711926e9ddaad3b35089cc039ce1af50b21a4ae8cb \
+    --hash=sha256:1484f9e692091450e7edf418c939e15bfc8fc68856e36ce399aed6889dae8bb0 \
+    --hash=sha256:193f50a6ab78a970c9b4f148e7c750cfde64f59815e86f686c22e26b4fe01ce7 \
+    --hash=sha256:3497c1af9f2526962f09329fd61a36566305e6c72da2590ae0d7d1322818843b \
+    --hash=sha256:57d65074b4f5baa4ab5da1605c02be90ac20c8b40fb137d6a8df9f416b0d0ce2 \
+    --hash=sha256:8bdbeaddaac52d15c6dce38c71b03038ef7772b977847eb6d374fc86636fa510 \
+    --hash=sha256:a19731d5e83ae4737bb2a089605e636077ac001d18781b3cf489b9546c7c80d6 \
+    --hash=sha256:abc0525ae2689a8000837729eef7883b9391cd6aa7950249dcf5a4ede230d5dd \
+    --hash=sha256:becc576b7e6b553d22cbdf418686ee4daa443d7217999125c045ad56322dda10 \
+    --hash=sha256:ca37bf6a6d0046272c152eea90d2e4ef34593aaa32e8873fc14c16440f22d4b7
     # via
     #   gcp-docuploader
     #   gcp-releasetool