diff --git a/README.md b/README.md
index 4534313d..9624b7aa 100755
--- a/README.md
+++ b/README.md
@@ -27,16 +27,32 @@ To run on **Linux**, you will also need to install `tkinter` separately like so:
 
 To compile to an executable so you can run this on a system without python installed.
 
+_Windows OS_
+
 To create aleapp.exe, run:
 
 ```
-pyinstaller --onefile aleapp.spec
+pyinstaller \scripts\pyinstaller\aleapp.spec
 ```
 
 To create aleappGUI.exe, run:
 
 ```
-pyinstaller --onefile --noconsole aleappGUI.spec
+pyinstaller \scripts\pyinstaller\aleappGUI.spec
+```
+
+_macOS_
+
+To create aleapp, run:
+
+```
+pyinstaller /scripts/pyinstaller/aleapp_macos.spec
+```
+
+To create aleappGUI.app, run:
+
+```
+pyinstaller /scripts/pyinstaller/aleappGUI_macos.spec
 ```
 
 ## Usage
diff --git a/scripts/pyinstaller/aleapp.spec b/scripts/pyinstaller/aleapp.spec
index 55a8306e..79a6c916 100755
--- a/scripts/pyinstaller/aleapp.spec
+++ b/scripts/pyinstaller/aleapp.spec
@@ -20,7 +20,8 @@ a = Analysis(['..\\..\\aleapp.py'],
                 'polyline',
                 'simplekml',
                 'xlsxwriter',
-                'xmltodict'
+                'xmltodict',
+                'zoneinfo',
              ],
              hookspath=['.\\'],
              runtime_hooks=[],
diff --git a/scripts/pyinstaller/aleappGUI.spec b/scripts/pyinstaller/aleappGUI.spec
index 24e5c4d3..05ab5f38 100755
--- a/scripts/pyinstaller/aleappGUI.spec
+++ b/scripts/pyinstaller/aleappGUI.spec
@@ -20,7 +20,8 @@ a = Analysis(['..\\..\\aleappGUI.py'],
                 'polyline',
                 'simplekml',
                 'xlsxwriter',
-                'xmltodict'
+                'xmltodict',
+                'zoneinfo',
              ],
              hookspath=['.\\'],
              runtime_hooks=[],
diff --git a/scripts/pyinstaller/aleappGUI_macOS.spec b/scripts/pyinstaller/aleappGUI_macOS.spec
index 1d05e951..bbf4aedf 100755
--- a/scripts/pyinstaller/aleappGUI_macOS.spec
+++ b/scripts/pyinstaller/aleappGUI_macOS.spec
@@ -20,6 +20,7 @@ a = Analysis(
         'polyline',
         'xmltodict',
         'xlsxwriter',
+        'zoneinfo',
     ],
     hookspath=[],
     hooksconfig={},
diff --git a/scripts/pyinstaller/aleapp_macOS.spec b/scripts/pyinstaller/aleapp_macOS.spec
index 96c72ed4..600c083b 100644
--- a/scripts/pyinstaller/aleapp_macOS.spec
+++ b/scripts/pyinstaller/aleapp_macOS.spec
@@ -20,6 +20,7 @@ a = Analysis(
         'polyline',
         'xmltodict',
         'xlsxwriter',
+        'zoneinfo',
     ],
     hookspath=[],
     hooksconfig={},