diff --git a/types/nunjucks/index.d.ts b/types/nunjucks/index.d.ts
index 293b3612ec23ec..c6ad5e8195b507 100644
--- a/types/nunjucks/index.d.ts
+++ b/types/nunjucks/index.d.ts
@@ -44,6 +44,7 @@ export interface ConfigureOptions {
     lstripBlocks?: boolean | undefined;
     watch?: boolean | undefined;
     noCache?: boolean | undefined;
+    dev?: boolean | undefined;
     web?:
         | {
               useCache?: boolean | undefined;
diff --git a/types/nunjucks/nunjucks-tests.ts b/types/nunjucks/nunjucks-tests.ts
index f0e377ccce16e3..1d1393c1fe1023 100644
--- a/types/nunjucks/nunjucks-tests.ts
+++ b/types/nunjucks/nunjucks-tests.ts
@@ -30,6 +30,7 @@ nunjucks.configure('views', {
     autoescape: true,
     watch: true,
 });
+nunjucks.configure({ dev: true });
 rendered = env.renderString(src, ctx);
 
 env.on('load', (name, source, loader) => {});
@@ -40,6 +41,7 @@ let extension: nunjucks.Extension = {
         return 'The parser api is complicated';
     },
 };
+
 env = env.addExtension('SpawnGlitter', extension);
 const hasExtension: boolean = env.hasExtension('SpawnGlitter');
 extension = env.getExtension('SpawnGlitter');