diff --git a/requirements.txt b/requirements.txt
index a4f6d24f..7d02bb6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -396,18 +396,16 @@ proto-plus==1.26.1 \
     # via
     #   google-api-core
     #   google-cloud-spanner
-protobuf==5.29.5 \
-    --hash=sha256:3f1c6468a2cfd102ff4703976138844f78ebd1fb45f49011afc5139e9e283079 \
-    --hash=sha256:3f76e3a3675b4a4d867b52e4a5f5b78a2ef9565549d4037e06cf7b0942b1d3fc \
-    --hash=sha256:470f3af547ef17847a28e1f47200a1cbf0ba3ff57b7de50d22776607cd2ea353 \
-    --hash=sha256:63848923da3325e1bf7e9003d680ce6e14b07e55d0473253a690c3a8b8fd6e61 \
-    --hash=sha256:6cf42630262c59b2d8de33954443d94b746c952b01434fc58a417fdbd2e84bd5 \
-    --hash=sha256:6f642dc9a61782fa72b90878af134c5afe1917c89a568cd3476d758d3c3a0736 \
-    --hash=sha256:7318608d56b6402d2ea7704ff1e1e4597bee46d760e7e4dd42a3d45e24b87f2e \
-    --hash=sha256:bc1463bafd4b0929216c35f437a8e28731a2b7fe3d98bb77a600efced5a15c84 \
-    --hash=sha256:e38c5add5a311f2a6eb0340716ef9b039c1dfa428b28f25a7838ac329204a671 \
-    --hash=sha256:ef91363ad4faba7b25d844ef1ada59ff1604184c0bcd8b39b8a6bef15e1af238 \
-    --hash=sha256:fa18533a299d7ab6c55a238bf8629311439995f2e7eca5caaff08663606e9015
+protobuf==6.32.0 \
+    --hash=sha256:15eba1b86f193a407607112ceb9ea0ba9569aed24f93333fe9a497cf2fda37d3 \
+    --hash=sha256:501fe6372fd1c8ea2a30b4d9be8f87955a64d6be9c88a973996cef5ef6f0abf1 \
+    --hash=sha256:75a2aab2bd1aeb1f5dc7c5f33bcb11d82ea8c055c9becbb41c26a8c43fd7092c \
+    --hash=sha256:7db8ed09024f115ac877a1427557b838705359f047b2ff2f2b2364892d19dacb \
+    --hash=sha256:84f9e3c1ff6fb0308dbacb0950d8aa90694b0d0ee68e75719cb044b7078fe741 \
+    --hash=sha256:a81439049127067fc49ec1d36e25c6ee1d1a2b7be930675f919258d03c04e7d2 \
+    --hash=sha256:a8bdbb2f009cfc22a36d031f22a625a38b615b5e19e558a7b756b3279723e68e \
+    --hash=sha256:ba377e5b67b908c8f3072a57b63e2c6a4cbd18aea4ed98d2584350dbf46f2783 \
+    --hash=sha256:d52691e5bee6c860fff9a1c86ad26a13afbeb4b168cd4445c922b7e2cf85aaf0
     # via
     #   google-api-core
     #   google-cloud-spanner