diff --git a/electron/src/setup.ts b/electron/src/setup.ts
index e7c957bf..8650858a 100644
--- a/electron/src/setup.ts
+++ b/electron/src/setup.ts
@@ -224,8 +224,8 @@ export function setupContentSecurityPolicy(customScheme: string): void {
         ...details.responseHeaders,
         'Content-Security-Policy': [
           electronIsDev
-            ? `default-src ${customScheme}://* 'unsafe-inline' devtools://* 'unsafe-eval' data:`
-            : `default-src ${customScheme}://* 'unsafe-inline' data:`,
+            ? `default-src ${customScheme}://* 'unsafe-inline' devtools://* 'unsafe-eval' data: https:; style-src ${customScheme}://* 'unsafe-inline' https://fonts.googleapis.com; font-src ${customScheme}://* https://fonts.gstatic.com data:`
+            : `default-src ${customScheme}://* 'unsafe-inline' data: https:; style-src ${customScheme}://* 'unsafe-inline' https://fonts.googleapis.com; font-src ${customScheme}://* https://fonts.gstatic.com data:`,
         ],
       },
     });