diff --git a/cypress.config.ts b/cypress.config.ts
index f9bc521bdd..b57fe7f6c4 100644
--- a/cypress.config.ts
+++ b/cypress.config.ts
@@ -27,7 +27,7 @@ export default defineConfig({
             return require("./cypress/plugins/index.ts").default(on, config);
         },
         baseUrl: "http://localhost:8080",
-        specPattern: "cypress/e2e/**/*.{js,jsx,ts,tsx}",
+        specPattern: "cypress/e2e/**/*.spec.{js,jsx,ts,tsx}",
     },
     env: {
         // Docker tag to use for `ghcr.io/matrix-org/sliding-sync` image.
diff --git a/cypress/e2e/toasts/analytics-toast.ts b/cypress/e2e/toasts/analytics-toast.spec.ts
similarity index 100%
rename from cypress/e2e/toasts/analytics-toast.ts
rename to cypress/e2e/toasts/analytics-toast.spec.ts
diff --git a/cypress/e2e/user-onboarding/user-onboarding-new.ts b/cypress/e2e/user-onboarding/user-onboarding-new.spec.ts
similarity index 100%
rename from cypress/e2e/user-onboarding/user-onboarding-new.ts
rename to cypress/e2e/user-onboarding/user-onboarding-new.spec.ts
diff --git a/cypress/e2e/user-onboarding/user-onboarding-old.ts b/cypress/e2e/user-onboarding/user-onboarding-old.spec.ts
similarity index 100%
rename from cypress/e2e/user-onboarding/user-onboarding-old.ts
rename to cypress/e2e/user-onboarding/user-onboarding-old.spec.ts