diff --git a/src/screenmonitor.py b/src/screenmonitor.py
index 1955283..feaba23 100644
--- a/src/screenmonitor.py
+++ b/src/screenmonitor.py
@@ -26,6 +26,20 @@ def capture_screenshot():
     print(f"Screenshot saved to {filename}")
 
 
+def delete_old_screenshots():
+    # Define the time threshold (72 hours ago)
+    time_threshold = datetime.now() - timedelta(hours=72)
+
+    for filename in os.listdir(output_dir):
+        if filename.startswith("screenshot"):
+            file_path = os.path.join(output_dir, filename)
+            file_mtime = datetime.fromtimestamp(os.path.getmtime(file_path))
+
+            if file_mtime < time_threshold:
+                os.remove(file_path)
+                print(f"Deleted old screenshot: {file_path}")
+
+
 def main():
     while True:
         # Calculate the random time within the next 17-minute interval
@@ -41,6 +55,9 @@ def main():
         # Capture the screenshot
         capture_screenshot()
 
+        # Delete old screenshots
+        delete_old_screenshots()
+
         # Sleep for the remainder of the 17-minute interval
         remaining_interval = (next_interval_start - datetime.now()).total_seconds()
         if remaining_interval > 0: