diff --git a/pyproject.toml b/pyproject.toml
index aaa1ea145..327351437 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,8 +8,8 @@ build-backend = "setuptools.build_meta"
 name = "robotframework-browser"
 version = "19.12.6"
 dependencies = [
-    "grpcio == 1.78.1",
-    "grpcio-tools == 1.78.1",
+    "grpcio == 1.78.0",
+    "grpcio-tools == 1.78.0",
     "protobuf == 6.33.5",
     "robotframework >= 6.1.1, < 9.0.0",
     "robotframework-pythonlibcore >= 4.4.1, < 5.0.0",