diff --git a/package-lock.json b/package-lock.json
index 8feaa8a0..23c3bc51 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6749,11 +6749,6 @@
       "integrity": "sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==",
       "dev": true
     },
-    "is-wsl": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.1.0.tgz",
-      "integrity": "sha512-pFTjpv/x5HRj8kbZ/Msxi9VrvtOMRBqaDi3OIcbwPI3OuH+r3lLxVWukLITBaOGJIbA/w2+M1eVmVa4XNQlAmQ=="
-    },
     "isarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
diff --git a/package.json b/package.json
index d3d3d807..718d2bb6 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,6 @@
   "dependencies": {
     "cacache": "^12.0.3",
     "find-cache-dir": "^3.0.0",
-    "is-wsl": "^2.1.0",
     "jest-worker": "^24.9.0",
     "schema-utils": "^2.2.0",
     "serialize-javascript": "^2.1.0",
diff --git a/src/TaskRunner.js b/src/TaskRunner.js
index 24fa587d..25e0713f 100644
--- a/src/TaskRunner.js
+++ b/src/TaskRunner.js
@@ -4,7 +4,6 @@ import cacache from 'cacache';
 import findCacheDir from 'find-cache-dir';
 import Worker from 'jest-worker';
 import serialize from 'serialize-javascript';
-import isWsl from 'is-wsl';
 
 import minify from './minify';
 
@@ -28,11 +27,7 @@ export default class TaskRunner {
     // https://github.com/nodejs/node/issues/19022
     const cpus = os.cpus() || { length: 1 };
 
-    // WSL sometimes freezes, error seems to be on the WSL side
-    // https://github.com/webpack-contrib/terser-webpack-plugin/issues/21
-    return isWsl
-      ? 1
-      : parallel === true
+    return parallel === true
       ? cpus.length - 1
       : Math.min(Number(parallel) || 0, cpus.length - 1);
   }