diff --git a/README.md b/README.md
index 475c67a..0c83716 100644
--- a/README.md
+++ b/README.md
@@ -260,9 +260,9 @@ asyncio.run(main())
 
 You can choose a specified language model version by passing `model` argument to `GeminiClient.generate_content` or `GeminiClient.start_chat`. The default value is `unspecified`.
 
-Currently available models (as of Dec 21, 2024):
+Currently available models (as of Feb 1, 2025):
 
-- `unspecified` - Default model (Gemini 1.5 Pro if account has Gemini Advanced subscription, otherwise Gemini 1.5 Flash)
+- `unspecified` - Default model (Gemini 2.0 Flash if account does NOT have Gemini Advanced subscription)
 - `gemini-1.5-flash` - Gemini 1.5 Flash
 - `gemini-1.5-pro` - Gemini 1.5 Pro **(requires Gemini Advanced account)**
 - `gemini-1.5-pro-research` - Gemini 1.5 Pro with Deep Research **(requires Gemini Advanced account)**
diff --git a/src/gemini_webapi/constants.py b/src/gemini_webapi/constants.py
index 623aecc..0c9f5e6 100644
--- a/src/gemini_webapi/constants.py
+++ b/src/gemini_webapi/constants.py
@@ -27,7 +27,7 @@ class Model(Enum):
     UNSPECIFIED = ("unspecified", {}, False)
     G_1_5_FLASH = (
         "gemini-1.5-flash",
-        {"x-goog-ext-525001261-jspb": '[null,null,null,null,"7daceb7ef88130f5"]'},
+        {"x-goog-ext-525001261-jspb": '[null,null,null,null,"418ab5ea040b5c43"]'},
         False,
     )
     G_1_5_PRO = (
@@ -42,7 +42,7 @@ class Model(Enum):
     )
     G_2_0_FLASH_EXP = (
         "gemini-2.0-flash-exp",
-        {"x-goog-ext-525001261-jspb": '[null,null,null,null,"948b866104ccf484"]'},
+        {"x-goog-ext-525001261-jspb": '[null,null,null,null,"f299729663a2343f"]'},
         False,
     )
     G_2_0_EXP_ADVANCED = (