diff --git a/python_bridge/requirements.txt b/python_bridge/requirements.txt
index 2728e77..d584836 100644
--- a/python_bridge/requirements.txt
+++ b/python_bridge/requirements.txt
@@ -24,6 +24,10 @@ pyttsx3>=2.90
 # gTTS: Google Text-to-Speech (online, bessere Qualität)
 gTTS>=2.4.0
 
+# pydub: Audio-Manipulation (für gTTS Geschwindigkeitsänderung)
+# Benötigt ffmpeg: sudo apt install ffmpeg
+pydub>=0.25.1
+
 # pygame: Für Audio-Wiedergabe (gTTS braucht das)
 pygame>=2.5.2