diff --git a/packages/better-auth/src/adapters/adapter-factory/types.ts b/packages/better-auth/src/adapters/adapter-factory/types.ts
index d6fc6f69d8..e5d3689641 100644
--- a/packages/better-auth/src/adapters/adapter-factory/types.ts
+++ b/packages/better-auth/src/adapters/adapter-factory/types.ts
@@ -50,7 +50,7 @@ export type AdapterFactoryCustomizeAdapterCreator = (config: {
 	 *
 	 * If the config has defined `debugLogs` as `false`, no logs will be shown.
 	 */
-	debugLog: (...args: any[]) => void;
+	debugLog: (...args: unknown[]) => void;
 	/**
 	 * Get the model name which is expected to be saved in the database based on the user's schema.
 	 */
@@ -104,16 +104,16 @@ export type AdapterFactoryCustomizeAdapterCreator = (config: {
 	}) => DBFieldAttribute;
 	// The following functions are exposed primarily for the purpose of having wrapper adapters.
 	transformInput: (
-		data: Record<string, any>,
+		data: Record<string, unknown>,
 		defaultModelName: string,
 		action: "create" | "update",
 		forceAllowId?: boolean | undefined,
-	) => Promise<Record<string, any>>;
+	) => Promise<Record<string, unknown>>;
 	transformOutput: (
-		data: Record<string, any>,
+		data: Record<string, unknown>,
 		defaultModelName: string,
 		select?: string[] | undefined,
-	) => Promise<Record<string, any>>;
+	) => Promise<Record<string, unknown>>;
 	transformWhereClause: <W extends Where[] | undefined>({
 		model,
 		where,