diff --git a/README.md b/README.md
index 77456e7..da4c57e 100644
--- a/README.md
+++ b/README.md
@@ -46,3 +46,13 @@ Now you can visit neo4J browser at http://localhost:7474/.
  9. Allow to rate dependencies
 10. Allow to mark dependency as deprecated
 11. Visualise dependencies
+
+## Docs
+
+### node.js Yarn
+
+```shell
+# Parse yarn.lock to json
+# requires node.js and yarn package to be installed
+yarn list --json --silent --no-progress > yarn.json
+```
diff --git a/Watchtower.Playground/Watchtower.Playground.csproj b/Watchtower.Playground/Watchtower.Playground.csproj
index a206a95..11affad 100644
--- a/Watchtower.Playground/Watchtower.Playground.csproj
+++ b/Watchtower.Playground/Watchtower.Playground.csproj
@@ -10,6 +10,7 @@
   <ItemGroup>
     <PackageReference Include="GitLabApiClient" Version="1.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="Yarnpkg.Yarn" Version="1.22.4" />
   </ItemGroup>
 
   <ItemGroup>