diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5544b6..94f6bd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,3 +38,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Bump casaplotms requirement from >=2.7.4 to >=2.8.2 (#320).
 - Bump `codecov/codecov-action` from 5 to 7 ([#328](https://github.com/PhangsTeam/phangs_imaging_scripts/pull/328), [#351](https://github.com/PhangsTeam/phangs_imaging_scripts/pull/351))
 - Bump `actions/checkout` from 5 to 6 ([#327](https://github.com/PhangsTeam/phangs_imaging_scripts/pull/327))
+- Bump `protobuf` from 3.20 to 7.35.1 ([#356](https://github.com/PhangsTeam/phangs_imaging_scripts/pull/356))
diff --git a/pyproject.toml b/pyproject.toml
index a1ba4f8..366e23c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
     "astropy >= 7.2.0",
     "astroquery >= 0.4.11",
     "numpy >= 2.3.5",
-    "protobuf == 3.20",
+    "protobuf == 7.35.1",
     "pytz >= 2025.2",
     "scipy >= 1.16.3",
     "spectral-cube >= 0.6.7",