diff --git a/.github/workflows/pack.yml b/.github/workflows/pack.yml
index a9f858a..81aa999 100644
--- a/.github/workflows/pack.yml
+++ b/.github/workflows/pack.yml
@@ -20,7 +20,7 @@ jobs:
     # The type of runner that the job will run on
     strategy:
       matrix:
-        os: ["windows-latest", "macos-latest", "macos-11"]
+        os: ["windows-latest", "macos-latest", "macos-13"]
         python-version: ["3.8", "3.9", "3.10"] # must use str, not int, or 3.10 will be recognized as 3.1
     runs-on: ${{ matrix.os }}
     # Steps represent a sequence of tasks that will be executed as part of the job
diff --git a/.github/workflows/release_macos.yml b/.github/workflows/release_macos.yml
index 625520f..11f946d 100644
--- a/.github/workflows/release_macos.yml
+++ b/.github/workflows/release_macos.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.9"] # must use str, not int, or 3.10 will be recognized as 3.1
-        os: ["macos-latest", "macos-11"]
+        os: ["macos-latest", "macos-13"]
     runs-on: ${{ matrix.os }}
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
diff --git a/.github/workflows/release_windows.yml b/.github/workflows/release_windows.yml
index 55866da..706f190 100644
--- a/.github/workflows/release_windows.yml
+++ b/.github/workflows/release_windows.yml
@@ -14,7 +14,7 @@ on:
 jobs:
   # This workflow contains a single job called "build"
   build:
-    name: test pack task
+    name: release and upload assets task
     # The type of runner that the job will run on
     strategy:
       matrix:
diff --git a/pack.py b/pack.py
index b50210d..948c1d2 100644
--- a/pack.py
+++ b/pack.py
@@ -159,10 +159,13 @@ def pack():
                 windows_out = windows_out_new
             print(windows_out)
         elif os_name.startswith("macos"):
-            if os_name != "macos-latest":
-                macos_out_new = macos_out.replace("macos", os_name.replace("-", "_"))
-                os.rename(macos_out, macos_out_new)
-                macos_out = macos_out_new
+            macos_version = os_name.split("-")[1]
+            if macos_version.isdigit() and int(macos_version) < 14:
+                macos_out_new = macos_out.replace("macos", "macos_x64")
+            else:   # github actions macos-latest is using M1 chip
+                macos_out_new = macos_out.replace("macos", "macos_arm64")
+            os.rename(macos_out, macos_out_new)
+            macos_out = macos_out_new
             print(macos_out)
         else:
             sys.exit(1)