diff --git a/packages/tailwindcss-language-server/src/util/html.ts b/packages/tailwindcss-language-server/src/util/html.ts
index f9e687c..d0f5743 100644
--- a/packages/tailwindcss-language-server/src/util/html.ts
+++ b/packages/tailwindcss-language-server/src/util/html.ts
@@ -12,6 +12,8 @@ export const HTML_LANGUAGES = [
   'hbs',
   'html',
   'HTML (Eex)',
+  'HTML (EEx)',
+  'html-eex',
   'jade',
   'leaf',
   'liquid',
diff --git a/packages/tailwindcss-vscode/src/lib/languages.ts b/packages/tailwindcss-vscode/src/lib/languages.ts
index b20674a..8e1b859 100644
--- a/packages/tailwindcss-vscode/src/lib/languages.ts
+++ b/packages/tailwindcss-vscode/src/lib/languages.ts
@@ -11,6 +11,8 @@ export const LANGUAGES = [
   'hbs',
   'html',
   'HTML (Eex)',
+  'HTML (EEx)',
+  'html-eex',
   'jade',
   'leaf',
   'liquid',