diff --git a/docs/Extensions.md b/docs/Extensions.md
index 0e396ce2..b80e1a26 100644
--- a/docs/Extensions.md
+++ b/docs/Extensions.md
@@ -41,6 +41,7 @@ script.py may define the special functions and variables below.
 | `def input_modifier(string)`  | Modifies the input string before it enters the model. In chat mode, it is applied to the user message. Otherwise, it is applied to the entire prompt. |
 | `def output_modifier(string)`  | Modifies the output string before it is presented in the UI. In chat mode, it is applied to the bot's reply. Otherwise, it is applied to the entire output. |
 | `def state_modifier(state)`  | Modifies the dictionary containing the UI input parameters before it is used by the text generation functions. |
+| `def history_modifier(history)`  | Modifies the chat history before the text generation in chat mode begins. |
 | `def bot_prefix_modifier(string)`  | Applied in chat mode to the prefix for the bot's reply. |
 | `def custom_generate_reply(...)` | Overrides the main text generation function. |
 | `def custom_generate_chat_prompt(...)` | Overrides the prompt generator in chat mode. |
diff --git a/extensions/silero_tts/script.py b/extensions/silero_tts/script.py
index e3b5b1aa..c54d9ac5 100644
--- a/extensions/silero_tts/script.py
+++ b/extensions/silero_tts/script.py
@@ -83,17 +83,22 @@ def input_modifier(string):
     they are fed into the model.
     """
 
-    # Remove autoplay from the last reply
-    if shared.is_chat() and len(shared.history['internal']) > 0:
-        shared.history['visible'][-1] = [
-            shared.history['visible'][-1][0],
-            shared.history['visible'][-1][1].replace('controls autoplay>', 'controls>')
-        ]
-
     shared.processing_message = "*Is recording a voice message...*"
     return string
 
 
+def history_modifier(history):
+
+    # Remove autoplay from the last reply
+    if len(history['internal']) > 0:
+        history['visible'][-1] = [
+            history['visible'][-1][0],
+            history['visible'][-1][1].replace('controls autoplay>', 'controls>')
+        ]
+
+    return history
+
+
 def output_modifier(string):
     """
     This function is applied to the model outputs.
diff --git a/modules/chat.py b/modules/chat.py
index ea52145d..5565b6c8 100644
--- a/modules/chat.py
+++ b/modules/chat.py
@@ -181,6 +181,7 @@ def extract_message_from_reply(reply, state):
 
 def chatbot_wrapper(text, history, state, regenerate=False, _continue=False, loading_message=True):
     output = copy.deepcopy(history)
+    output = apply_extensions('history', output)
     if shared.model_name == 'None' or shared.model is None:
         logging.error("No model is loaded! Select one in the Model tab.")
         yield output
@@ -199,6 +200,7 @@ def chatbot_wrapper(text, history, state, regenerate=False, _continue=False, loa
         if visible_text is None:
             visible_text = text
 
+        text = apply_extensions('input', text)
         # *Is typing...*
         if loading_message:
             yield {'visible': output['visible'] + [[visible_text, shared.processing_message]], 'internal': output['internal']}
@@ -307,8 +309,6 @@ def generate_chat_reply(text, history, state, regenerate=False, _continue=False,
         if (len(history['visible']) == 1 and not history['visible'][0][0]) or len(history['internal']) == 0:
             yield history
             return
-    else:
-        text = apply_extensions('input', text)
 
     for history in chatbot_wrapper(text, history, state, regenerate=regenerate, _continue=_continue, loading_message=loading_message):
         yield history
diff --git a/modules/extensions.py b/modules/extensions.py
index 2f68caf5..d41ae3df 100644
--- a/modules/extensions.py
+++ b/modules/extensions.py
@@ -91,6 +91,15 @@ def _apply_state_modifier_extensions(state):
     return state
 
 
+# Extension that modifies the chat history before it is used
+def _apply_history_modifier_extensions(history):
+    for extension, _ in iterator():
+        if hasattr(extension, "history_modifier"):
+            history = getattr(extension, "history_modifier")(history)
+
+    return history
+
+
 # Extension functions that override the default tokenizer output - currently only the first one will work
 def _apply_tokenizer_extensions(function_name, state, prompt, input_ids, input_embeds):
     for extension, _ in iterator():
@@ -165,6 +174,7 @@ EXTENSION_MAP = {
     "input": partial(_apply_string_extensions, "input_modifier"),
     "output": partial(_apply_string_extensions, "output_modifier"),
     "state": _apply_state_modifier_extensions,
+    "history": _apply_history_modifier_extensions,
     "bot_prefix": partial(_apply_string_extensions, "bot_prefix_modifier"),
     "tokenizer": partial(_apply_tokenizer_extensions, "tokenizer_modifier"),
     "input_hijack": _apply_input_hijack,