diff --git a/eslint.config.mjs b/eslint.config.mjs
index efeb73e..b6ba310 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -1,17 +1,17 @@
-import globals from "globals";
-import pluginJs from "@eslint/js";
-import tseslint from "typescript-eslint";
+import pluginJs from '@eslint/js';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
 
 /** @type {import('eslint').Linter.Config[]} */
 export default [
-  { files: ["**/*.{js,mjs,cjs,ts}"] },
+  { files: ['**/*.{js,mjs,cjs,ts}'] },
   { languageOptions: { globals: globals.browser } },
   pluginJs.configs.recommended,
   ...tseslint.configs.recommended,
   {
     rules: {
-      "@typescript-eslint/no-explicit-any": "off",
-      "@typescript-eslint/no-require-imports": "off",
-    },
-  },
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-require-imports': 'off'
+    }
+  }
 ];
diff --git a/functions/src/emails/template/step-partnership-generated.ts b/functions/src/emails/template/step-partnership-generated.ts
index 0f0679b..4747f4c 100644
--- a/functions/src/emails/template/step-partnership-generated.ts
+++ b/functions/src/emails/template/step-partnership-generated.ts
@@ -11,7 +11,7 @@ export default ({ sponsoring, creationDate }: Company, id: string, configuration
     day: 'numeric'
   };
   const date = addDays((creationDate as Timestamp).toDate(), 15);
-  const dateTimeFormat = new Intl.DateTimeFormat('fr-FR', options as any);
+  const dateTimeFormat = new Intl.DateTimeFormat('fr-FR', options as Intl.DateTimeFormatOptions);
 
   const sponsor_reservation_end_date = dateTimeFormat.format(date);
 
diff --git a/functions/src/utils/mail.ts b/functions/src/utils/mail.ts
index 65c3384..a278e89 100644
--- a/functions/src/utils/mail.ts
+++ b/functions/src/utils/mail.ts
@@ -11,7 +11,7 @@ export function getFrom(mail: Email): {
   };
 }
 
-export function sendEmailToAllContacts(company: Company, emailFactory: any, configuration: Configuration) {
+export function sendEmailToAllContacts(company: Company, emailFactory: { subject: string; body: string }, configuration: Configuration) {
   let emails = [configuration.mail.cc];
   if (configuration.mail.enabled === 'true') {
     emails = [...emails, ...company.email];