diff --git a/docker/base/requirements.dev.txt b/docker/base/requirements.dev.txt
index aa445fc2..66aab573 100644
--- a/docker/base/requirements.dev.txt
+++ b/docker/base/requirements.dev.txt
@@ -1,6 +1,6 @@
 pre-commit==3.5.0
 flatbuffers==22.12.6
-protobuf== 4.21.12
+protobuf==5.26.1
 grpcio-tools==1.67.0
 grpcio==1.67.0
 imageio==2.20.0
diff --git a/pyproject.toml b/pyproject.toml
index 265b3396..ca1031a4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ authors = [
     {name = "Mark Niemeyer", email = "mark.niemeyer@dfki.de"}
 ]
 dependencies = [
-    "protobuf == 4.21.12",
+    "protobuf == 5.26.1",
     "flatbuffers == 22.12.6",
     "grpcio == 1.67.0",
 ]