diff --git a/lib/models/revision.ts b/lib/models/revision.ts
index b41fedbee..f49a802dc 100644
--- a/lib/models/revision.ts
+++ b/lib/models/revision.ts
@@ -24,7 +24,7 @@ class Data {
 }
 
 function createDmpWorker (): ChildProcess {
-  const worker = childProcess.fork(path.resolve(__dirname, '../workers/dmpWorker.js'), ['ignore'])
+  const worker = childProcess.fork(path.resolve(__dirname, '../workers/dmpWorker.ts'), ['ignore'])
   logger.debug('dmp worker process started')
   worker.on('message', function (data: Data) {
     if (!data || !data.msg || !data.cacheKey) {
diff --git a/yarn.lock b/yarn.lock
index 83f5ba41d..7ddc723cd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7092,22 +7092,6 @@ node-libs-browser@^2.2.1:
     util "^0.11.0"
     vm-browserify "^1.0.1"
 
-node-pre-gyp@*:
-  version "0.14.0"
-  resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.14.0.tgz#9a0596533b877289bcad4e143982ca3d904ddc83"
-  integrity sha512-+CvDC7ZttU/sSt9rFjix/P05iS43qHCOOGzcr3Ry99bXG7VX953+vFyEuph/tfqoYu8dttBkE86JSKBO2OzcxA==
-  dependencies:
-    detect-libc "^1.0.2"
-    mkdirp "^0.5.1"
-    needle "^2.2.1"
-    nopt "^4.0.1"
-    npm-packlist "^1.1.6"
-    npmlog "^4.0.2"
-    rc "^1.2.7"
-    rimraf "^2.6.1"
-    semver "^5.3.0"
-    tar "^4.4.2"
-
 node-pre-gyp@^0.11.0:
   version "0.11.0"
   resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.11.0.tgz#db1f33215272f692cd38f03238e3e9b47c5dd054"
@@ -9940,7 +9924,7 @@ tar-stream@^1.5.0:
     to-buffer "^1.1.1"
     xtend "^4.0.0"
 
-tar@^4, tar@^4.4.2:
+tar@^4:
   version "4.4.13"
   resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.13.tgz#43b364bc52888d555298637b10d60790254ab525"
   integrity sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==