diff --git a/__tests__/externals/zip-darwin b/__tests__/externals/zip-darwin
new file mode 100755
index 0000000..60424b0
Binary files /dev/null and b/__tests__/externals/zip-darwin differ
diff --git a/__tests__/tool-cache.test.ts b/__tests__/tool-cache.test.ts
index c1fb9e8..59315e5 100644
--- a/__tests__/tool-cache.test.ts
+++ b/__tests__/tool-cache.test.ts
@@ -231,7 +231,9 @@ describe('@actions/tool-cache', function() {
         ]
         await exec.exec(`"${powershellPath}"`, args)
       } else {
-        const zipPath: string = path.join(__dirname, 'externals', 'zip')
+        const zipBin: string =
+          process.platform === 'darwin' ? 'zip-darwin' : 'zip'
+        const zipPath: string = path.join(__dirname, 'externals', zipBin)
         await exec.exec(`"${zipPath}`, [zipFile, '-r', '.'], {cwd: stagingDir})
       }
 
@@ -282,7 +284,9 @@ describe('@actions/tool-cache', function() {
         ]
         await exec.exec(`"${powershellPath}"`, args)
       } else {
-        const zipPath = path.join(__dirname, 'externals', 'zip')
+        const zipBin: string =
+          process.platform === 'darwin' ? 'zip-darwin' : 'zip'
+        const zipPath = path.join(__dirname, 'externals', zipBin)
         await exec.exec(zipPath, [zipFile, '-r', '.'], {cwd: stagingDir})
       }
 
diff --git a/scripts/externals/unzip-darwin b/scripts/externals/unzip-darwin
new file mode 100755
index 0000000..4ef1504
Binary files /dev/null and b/scripts/externals/unzip-darwin differ
diff --git a/src/tool-cache.ts b/src/tool-cache.ts
index a25cdce..c4c71f1 100644
--- a/src/tool-cache.ts
+++ b/src/tool-cache.ts
@@ -218,7 +218,11 @@ export async function extractZip(file: string, dest?: string): Promise<string> {
   if (IS_WINDOWS) {
     await extractZipWin(file, dest)
   } else {
-    await extractZipNix(file, dest)
+    if (process.platform === 'darwin') {
+      await extractZipDarwin(file, dest)
+    } else {
+      await extractZipNix(file, dest)
+    }
   }
 
   return dest
@@ -250,6 +254,17 @@ async function extractZipNix(file: string, dest: string): Promise<void> {
   await exec(`"${unzipPath}"`, [file], {cwd: dest})
 }
 
+async function extractZipDarwin(file: string, dest: string): Promise<void> {
+  const unzipPath = path.join(
+    __dirname,
+    '..',
+    'scripts',
+    'externals',
+    'unzip-darwin'
+  )
+  await exec(`"${unzipPath}"`, [file], {cwd: dest})
+}
+
 /**
  * Caches a directory and installs it into the tool cacheDir
  *