diff --git a/src/fabric-material/tuna-app/package-lock.json b/src/fabric-material/tuna-app/package-lock.json
index 2ca8d46..47bca64 100644
--- a/src/fabric-material/tuna-app/package-lock.json
+++ b/src/fabric-material/tuna-app/package-lock.json
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diff --git a/src/fabric-material/tuna-app/package.json b/src/fabric-material/tuna-app/package.json
index a62ddc5..191d16f 100644
--- a/src/fabric-material/tuna-app/package.json
+++ b/src/fabric-material/tuna-app/package.json
@@ -6,7 +6,7 @@
     "dependencies": {
         "fabric-ca-client": "^1.0.2",
         "fabric-client": "^1.0.2",
-        "grpc": "^1.6.0",
+        "grpc": "^1.24.9",
         "express": "latest",
         "body-parser": "latest",
         "ejs": "latest",