diff --git a/PySimpleGUI.py b/PySimpleGUI.py
index 01f54d36..36a820da 100644
--- a/PySimpleGUI.py
+++ b/PySimpleGUI.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 
-version = __version__ = "4.57.0.20 Unreleased"
+version = __version__ = "4.57.0.21 Unreleased"
 
 _change_log = """
     Changelog since 4.57.0 released to PyPI on 13-Feb-2022
@@ -56,6 +56,8 @@ _change_log = """
             Using Element by itself isn't enough.  The entire list of possible elements is needed to that the code completion /error checking works
     4.57.0.20
         Simplified Radio, Checkbox, Slider creation. Moved the command parm outside the creation and instead made a config call.
+    4.57.0.21
+        Another coupon code.  Udemy makes it difficult by only giving a valid period of 5 days for some coupons
     """
 
 __version__ = version.split()[0]  # For PEP 396 and PEP 345
@@ -23635,7 +23637,7 @@ def main():
                 # webbrowser.open_new_tab(r'https://udemy.com/PySimpleGUI')
                 webbrowser.open_new_tab(r'https://www.buymeacoffee.com/PySimpleGUI')
         elif event in  ('-EMOJI-HEARTS-', '-HEART-'):
-            popup_scrolled("Oh look!  It's a Udemy discount coupon!", 'BE7BDF4D74791CDC1BF6',
+            popup_scrolled("Oh look!  It's a Udemy discount coupon!", 'AC62C193CF7E9F51EA79',
                            'A personal message from Mike -- thank you so very much for supporting PySimpleGUI!', title='Udemy Coupon', image=EMOJI_BASE64_MIKE)
 
         elif event == 'Themes':
diff --git a/docs/call reference.md b/docs/call reference.md
index b44e0fd5..9bd21113 100644
--- a/docs/call reference.md	
+++ b/docs/call reference.md	
@@ -25,9 +25,9 @@
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>
diff --git a/docs/cookbook.md b/docs/cookbook.md
index c3e234bd..93d79b00 100644
--- a/docs/cookbook.md
+++ b/docs/cookbook.md
@@ -25,9 +25,9 @@
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>
diff --git a/docs/index.md b/docs/index.md
index 9c433f9f..1d6c3802 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -25,9 +25,9 @@
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>
diff --git a/docs/readme.md b/docs/readme.md
index 5eb3ae15..a1f87193 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -9,8 +9,8 @@
       <img src="https://www.dropbox.com/s/6wzf3ebmj97v4zs/PySimpleGUI-GitHub-Udemy-Course.png?raw=1" width=200 alt="PySimpleGUI Udemy Course">
     </td>
     <td>
-      <h5>apply coupon for discount:<br>BE7BDF4D74791CDC1BF6</h6>
-      <a href="https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6">click here to visit course page</a>
+      <h5>apply coupon for discount:<br>AC62C193CF7E9F51EA79</h6>
+      <a href="https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79">click here to visit course page</a>
     </td>
   </tr>
 </table>
diff --git a/readme.md b/readme.md
index 5eb3ae15..a1f87193 100644
--- a/readme.md
+++ b/readme.md
@@ -9,8 +9,8 @@
       <img src="https://www.dropbox.com/s/6wzf3ebmj97v4zs/PySimpleGUI-GitHub-Udemy-Course.png?raw=1" width=200 alt="PySimpleGUI Udemy Course">
     </td>
     <td>
-      <h5>apply coupon for discount:<br>BE7BDF4D74791CDC1BF6</h6>
-      <a href="https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6">click here to visit course page</a>
+      <h5>apply coupon for discount:<br>AC62C193CF7E9F51EA79</h6>
+      <a href="https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79">click here to visit course page</a>
     </td>
   </tr>
 </table>
diff --git a/readme_creator/markdown input files/1_HEADER_top_part.md b/readme_creator/markdown input files/1_HEADER_top_part.md
index ad74aa86..a12eff6f 100644
--- a/readme_creator/markdown input files/1_HEADER_top_part.md	
+++ b/readme_creator/markdown input files/1_HEADER_top_part.md	
@@ -52,9 +52,9 @@ HOW DO I INSERT IMAGES ???
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>
diff --git a/readme_creator/markdown input files/5_call_reference.md b/readme_creator/markdown input files/5_call_reference.md
index 778aae40..b154337a 100644
--- a/readme_creator/markdown input files/5_call_reference.md	
+++ b/readme_creator/markdown input files/5_call_reference.md	
@@ -25,9 +25,9 @@
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>
diff --git a/readme_creator/output/call reference.md b/readme_creator/output/call reference.md
index b44e0fd5..9bd21113 100644
--- a/readme_creator/output/call reference.md	
+++ b/readme_creator/output/call reference.md	
@@ -25,9 +25,9 @@
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>
diff --git a/readme_creator/output/index.md b/readme_creator/output/index.md
index 9c433f9f..1d6c3802 100644
--- a/readme_creator/output/index.md
+++ b/readme_creator/output/index.md
@@ -25,9 +25,9 @@
                     <span style="font-weight: normal;">
                         apply coupon for discount: 
                     </span>
-                    BE7BDF4D74791CDC1BF6
+                    AC62C193CF7E9F51EA79
                 </div>
-                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=BE7BDF4D74791CDC1BF6','_blank');">
+                <button style="margin: 0 auto; display: block; width: 200px; height: 70px; border-radius: 14px; border: none; padding: 10px; font-size: 18px; background-color: #357296; color: white; cursor: pointer;" onclick="window.open('https://www.udemy.com/course/pysimplegui/?couponCode=AC62C193CF7E9F51EA79','_blank');">
                     click here to visit course page
                 </button>
             </div>