diff --git a/packages/nx/src/core/hasher/file-hasher-base.ts b/packages/nx/src/core/hasher/file-hasher-base.ts
index 59609de064aeb9..4db6e3bedd062c 100644
--- a/packages/nx/src/core/hasher/file-hasher-base.ts
+++ b/packages/nx/src/core/hasher/file-hasher-base.ts
@@ -1,8 +1,8 @@
-import { appRootPath } from 'nx/src/utils/app-root';
+import { workspaceRoot } from 'nx/src/utils/app-root';
 import { performance } from 'perf_hooks';
 import { defaultHashing } from './hashing-impl';
 import { FileData } from 'nx/src/shared/project-graph';
-import { joinPathFragments } from 'nx/src/utils/path';
+import { joinPathFragments, normalizePath } from 'nx/src/utils/path';
 
 export abstract class FileHasherBase {
   protected fileHashes: Map<string, string>;
@@ -61,16 +61,19 @@ export abstract class FileHasherBase {
     if (!this.fileHashes) {
       throw new Error('FileHasher is invoked before being initialized');
     }
-    const relativePath = path.startsWith(appRootPath)
-      ? path.substr(appRootPath.length + 1)
-      : path;
+    const normalizedWorkspaceRoot = normalizePath(workspaceRoot);
+    const relativePath = normalizePath(
+      path.startsWith(normalizedWorkspaceRoot)
+        ? path.substring(normalizedWorkspaceRoot.length + 1)
+        : path
+    );
     if (this.fileHashes.has(relativePath)) {
       return this.fileHashes.get(relativePath);
     } else {
       try {
         // this has to be absolute to avoid issues with cwd
         return defaultHashing.hashFile(
-          joinPathFragments(appRootPath, relativePath)
+          joinPathFragments(normalizedWorkspaceRoot, relativePath)
         );
       } catch {
         return '';
diff --git a/packages/nx/src/core/hasher/node-based-file-hasher.ts b/packages/nx/src/core/hasher/node-based-file-hasher.ts
index c8cea4161ecdcc..0740bb7e937fe3 100644
--- a/packages/nx/src/core/hasher/node-based-file-hasher.ts
+++ b/packages/nx/src/core/hasher/node-based-file-hasher.ts
@@ -6,6 +6,7 @@ import { existsSync, readdirSync, readFileSync, statSync } from 'fs';
 import { FileHasherBase } from './file-hasher-base';
 import { stripIndents } from '../../utils/strip-indents';
 import ignore from 'ignore';
+import { normalizePath } from 'nx/src/utils/path';
 
 export class NodeBasedFileHasher extends FileHasherBase {
   ignoredGlobs = getIgnoredGlobs();
@@ -43,7 +44,7 @@ export class NodeBasedFileHasher extends FileHasherBase {
     try {
       readdirSync(absoluteDirName).forEach((c) => {
         const absoluteChild = join(absoluteDirName, c);
-        const relChild = relative(appRootPath, absoluteChild);
+        const relChild = normalizePath(relative(appRootPath, absoluteChild));
         if (this.ignoredGlobs.ignores(relChild)) {
           return;
         }