diff --git a/Gemfile.lock b/Gemfile.lock
index 149e725..a6f0e16 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,17 +1,18 @@
 PATH
   remote: .
   specs:
-    lnrpc (0.1.0)
-      grpc (>= 1.16.0)
+    lnrpc (0.5.2.beta)
+      google-protobuf (>= 3.7)
+      grpc (>= 1.19.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.3)
-    google-protobuf (3.6.1)
+    google-protobuf (3.7.0)
     googleapis-common-protos-types (1.0.3)
       google-protobuf (~> 3.0)
-    grpc (1.18.0)
+    grpc (1.19.0)
       google-protobuf (~> 3.1)
       googleapis-common-protos-types (~> 1.0.0)
     rake (10.5.0)
@@ -39,4 +40,4 @@ DEPENDENCIES
   rspec (~> 3.0)
 
 BUNDLED WITH
-   1.17.2
+   1.17.3
diff --git a/lnrpc.gemspec b/lnrpc.gemspec
index 5d2827e..a1c1e86 100644
--- a/lnrpc.gemspec
+++ b/lnrpc.gemspec
@@ -27,5 +27,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
   
-  spec.add_dependency "grpc", ">= 1.16.0"
+  spec.add_dependency "grpc", ">= 1.19.0"
+  spec.add_dependency "google-protobuf", ">=3.7"
 end