diff --git a/lib/manager/npm/post-update/__snapshots__/yarn.spec.ts.snap b/lib/manager/npm/post-update/__snapshots__/yarn.spec.ts.snap
index 48c858717f4c7e1f1a46cd422991efc1e263dbf0..fbbd0f20ee35da5a2339dc041b09958fd2cfc5f8 100644
--- a/lib/manager/npm/post-update/__snapshots__/yarn.spec.ts.snap
+++ b/lib/manager/npm/post-update/__snapshots__/yarn.spec.ts.snap
@@ -3,7 +3,7 @@
 exports[`manager/npm/post-update/yarn catches errors 1`] = `
 Array [
   Object {
-    "cmd": "yarn install --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn install --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -25,7 +25,7 @@ Array [
 exports[`manager/npm/post-update/yarn generates lock files using yarn v1.22.0 1`] = `
 Array [
   Object {
-    "cmd": "yarn install --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn install --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -59,7 +59,7 @@ Array [
     },
   },
   Object {
-    "cmd": "yarn install --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn install --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -93,7 +93,7 @@ Array [
     },
   },
   Object {
-    "cmd": "yarn install --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn install --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -115,7 +115,7 @@ Array [
 exports[`manager/npm/post-update/yarn performs lock file updates and full install using yarn v1.22.0 1`] = `
 Array [
   Object {
-    "cmd": "yarn install --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn install --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -132,7 +132,7 @@ Array [
     },
   },
   Object {
-    "cmd": "yarn upgrade some-dep --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn upgrade some-dep --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -154,7 +154,7 @@ Array [
 exports[`manager/npm/post-update/yarn performs lock file updates using yarn v1.22.0 1`] = `
 Array [
   Object {
-    "cmd": "yarn install --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn install --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
@@ -171,7 +171,7 @@ Array [
     },
   },
   Object {
-    "cmd": "yarn upgrade some-dep --ignore-scripts --ignore-engines --ignore-platform",
+    "cmd": "yarn upgrade some-dep --network-timeout 100000 --ignore-scripts --ignore-engines --ignore-platform",
     "options": Object {
       "cwd": "some-dir",
       "encoding": "utf-8",
diff --git a/lib/manager/npm/post-update/yarn.ts b/lib/manager/npm/post-update/yarn.ts
index 806747dcd133342477c03a046d8b0b602683151a..f2f70b482fdafce2027eadb1a4ea4b47d5001496 100644
--- a/lib/manager/npm/post-update/yarn.ts
+++ b/lib/manager/npm/post-update/yarn.ts
@@ -51,9 +51,9 @@ export async function generateLockFile(
       );
     }
     const commands = [];
-    let cmdOptions = '';
+    let cmdOptions = '--network-timeout 100000';
     if (global.trustLevel !== 'high' || config.ignoreScripts) {
-      cmdOptions = '--ignore-scripts --ignore-engines --ignore-platform';
+      cmdOptions += ' --ignore-scripts --ignore-engines --ignore-platform';
     }
     const execOptions: ExecOptions = {
       cwd,