diff --git a/src/shared/api.ts b/src/shared/api.ts
index 48a08790b0..81eb1d5897 100644
--- a/src/shared/api.ts
+++ b/src/shared/api.ts
@@ -241,7 +241,7 @@ export const openAiModelInfoSaneDefaults: ModelInfo = {
 // Gemini
 // https://ai.google.dev/gemini-api/docs/models/gemini
 export type GeminiModelId = keyof typeof geminiModels
-export const geminiDefaultModelId: GeminiModelId = "gemini-2.0-flash-thinking-exp-01-21"
+export const geminiDefaultModelId: GeminiModelId = "gemini-2.0-flash-thinking-exp-1219"
 export const geminiModels = {
 	"gemini-2.0-flash-thinking-exp-01-21": {
 		maxTokens: 65536,