diff --git a/instrumentation/grpc/lib/opentelemetry/instrumentation/grpc/version.rb b/instrumentation/grpc/lib/opentelemetry/instrumentation/grpc/version.rb
index 1549ed154..059aee827 100644
--- a/instrumentation/grpc/lib/opentelemetry/instrumentation/grpc/version.rb
+++ b/instrumentation/grpc/lib/opentelemetry/instrumentation/grpc/version.rb
@@ -7,7 +7,7 @@
 module OpenTelemetry
   module Instrumentation
     module Grpc
-      VERSION = "0.1.3"
+      VERSION = '0.1.3'
     end
   end
 end