diff --git a/crates/oxide/src/fixtures/template-extensions.txt b/crates/oxide/src/fixtures/template-extensions.txt
index c059eff3a9ed..096932b6e3b5 100644
--- a/crates/oxide/src/fixtures/template-extensions.txt
+++ b/crates/oxide/src/fixtures/template-extensions.txt
@@ -2,6 +2,10 @@
 html
 pug
 
+# Glimmer
+gjs
+gts
+
 # JS
 astro
 cjs
diff --git a/crates/oxide/src/lib.rs b/crates/oxide/src/lib.rs
index ca8593e3515c..861c6c238a37 100644
--- a/crates/oxide/src/lib.rs
+++ b/crates/oxide/src/lib.rs
@@ -303,7 +303,11 @@ fn resolve_globs(root: &Path, dirs: Vec<PathBuf>) -> Vec<GlobEntry> {
         }
     }
 
-    let extension_list = found_extensions.into_iter().collect::<Vec<_>>().join(",");
+    let mut extension_list = found_extensions.into_iter().collect::<Vec<_>>();
+
+    extension_list.sort();
+
+    let extension_list = extension_list.join(",");
 
     // Build the globs for all globable directories.
     let shallow_globs = shallow_globable_directories.iter().map(|path| GlobEntry {
diff --git a/crates/oxide/tests/scan_dir.rs b/crates/oxide/tests/scan_dir.rs
index 7f875ea4ac76..5e13dbf72f8c 100644
--- a/crates/oxide/tests/scan_dir.rs
+++ b/crates/oxide/tests/scan_dir.rs
@@ -188,7 +188,7 @@ mod scan_dir {
         ]);
         assert_eq!(globs, vec![
             "index.html",
-            "src/**/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+            "src/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
             "src/a.html",
             "src/b.html",
             "src/c.html"
@@ -282,37 +282,37 @@ mod scan_dir {
                 "bar.html",
                 "baz.html",
                 "foo.html",
-                "nested-a/**/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-a/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-a/bar.html",
                 "nested-a/baz.html",
                 "nested-a/foo.html",
-                "nested-b/**/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-b/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-b/deeply-nested/bar.html",
                 "nested-b/deeply-nested/baz.html",
                 "nested-b/deeply-nested/foo.html",
-                "nested-c/*/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-c/*/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-c/bar.html",
                 "nested-c/baz.html",
                 "nested-c/foo.html",
-                "nested-c/sibling-folder/**/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-c/sibling-folder/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-c/sibling-folder/bar.html",
                 "nested-c/sibling-folder/baz.html",
                 "nested-c/sibling-folder/foo.html",
-                "nested-d/*/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-d/*/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-d/bar.html",
                 "nested-d/baz.html",
                 "nested-d/foo.html",
-                "nested-d/very/*/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
-                "nested-d/very/deeply/*/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
-                "nested-d/very/deeply/nested/*/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-d/very/*/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
+                "nested-d/very/deeply/*/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
+                "nested-d/very/deeply/nested/*/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-d/very/deeply/nested/bar.html",
                 "nested-d/very/deeply/nested/baz.html",
-                "nested-d/very/deeply/nested/directory/**/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}",
+                "nested-d/very/deeply/nested/directory/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}",
                 "nested-d/very/deeply/nested/directory/again/foo.html",
                 "nested-d/very/deeply/nested/directory/bar.html",
                 "nested-d/very/deeply/nested/directory/baz.html",
                 "nested-d/very/deeply/nested/directory/foo.html",
-                "nested-d/very/deeply/nested/foo.html"
+                "nested-d/very/deeply/nested/foo.html",
             ]
         );
     }