diff --git a/poetry.lock b/poetry.lock
index dce1a824..a072728f 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -4121,4 +4121,4 @@ grpc = ["grpcio", "ni-grpcdevice-v1-proto", "ni-protobuf-types", "protobuf"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.9,<4.0"
-content-hash = "3597a298003d0ad183a815aabcdea5868848992210fbbf13e80842388ddd7005"
+content-hash = "f7d53512dc12a25658f1a2bb319e6f2c4fe1c2c037b19f7b6de53646f9f72ed8"
diff --git a/pyproject.toml b/pyproject.toml
index 9dd1782e..14c03b32 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -68,13 +68,21 @@ nitypes = {version=">=1.0.0"}
 [tool.poetry.group.codegen.dependencies]
 Mako = "^1.2"
 grpcio-tools = [
+  # requires protobuf v4 or later
   { version = "1.49.1", python = ">=3.9,<3.12" },
   { version = "1.59.0", python = ">=3.12,<3.13" },
+  # requires protobuf v5 or later
   { version = "1.67.0", python = ">=3.13,<3.14" },
+  # requires protobuf v6 or later
   { version = "1.75.1", python = "^3.14" },
 ]
 # mypy-protobuf 3.6 is the last version that supports protobuf v4.
-mypy-protobuf = ">=3.4,<3.7"
+mypy-protobuf = [
+  # requires protobuf v4 or later
+  {version = ">=3.4,<3.7", python = ">=3.9,<3.14"},
+  # requires protobuf v6 or later
+  {version = ">=3.4", python = "^3.14"}
+]
 
 [tool.poetry.group.docs]
 optional = true