diff --git a/requirements-unlocked.txt b/requirements-unlocked.txt
index dde9b5a4..2b0d8e4c 100644
--- a/requirements-unlocked.txt
+++ b/requirements-unlocked.txt
@@ -5,7 +5,7 @@ ibis-framework
 ibis-substrait
 JPype1
 pandas
-protobuf==5.28.3
+protobuf==5.29.6
 pyarrow
 pytest
 pytest-csv
diff --git a/requirements.txt b/requirements.txt
index feabba57..da73b21a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ packaging==24.2
 pandas==2.2.3
 parsy==2.1
 pluggy==1.5.0
-protobuf==5.28.3
+protobuf==5.29.6
 pyarrow==23.0.1
 pytest==8.3.3
 pytest-csv==3.0.0