diff --git a/package.json b/package.json
index 20d0ab4..7ab0478 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
     "displayName": "Dictionary Completion",
     "description": "Word Completion",
     "icon": "images/dictionary.png",
-    "version": "1.2.2",
+    "version": "1.2.3",
     "publisher": "yzhang",
     "license": "MIT",
     "engines": {
@@ -19,6 +19,7 @@
     "activationEvents": [
         "onLanguage:markdown",
         "onLanguage:latex",
+        "onLanguage:asciidoc",
         "onLanguage:html",
         "onLanguage:javascript",
         "onLanguage:typescript",
diff --git a/src/completion.ts b/src/completion.ts
index ff48521..cb83799 100644
--- a/src/completion.ts
+++ b/src/completion.ts
@@ -57,6 +57,7 @@ export function activate(context: vscode.ExtensionContext) {
     context.subscriptions.push(
         vscode.languages.registerCompletionItemProvider(getDocSelector('markdown'), new DictionaryCompletionItemProvider("markdown")),
         vscode.languages.registerCompletionItemProvider(getDocSelector('latex'), new DictionaryCompletionItemProvider("latex")),
+        vscode.languages.registerCompletionItemProvider(getDocSelector('asciidoc'), new DictionaryCompletionItemProvider("asciidoc")),
         vscode.languages.registerCompletionItemProvider(getDocSelector('html'), new DictionaryCompletionItemProvider("html")),
         vscode.languages.registerCompletionItemProvider(getDocSelector('todo'), new DictionaryCompletionItemProvider("markdown"))
     );
@@ -214,6 +215,8 @@ class DictionaryCompletionItemProvider implements vscode.CompletionItemProvider
         }
 
         switch (this.fileType) {
+            case "asciidoc":
+                return this.completeByFirstLetter(firstLetter, addSpace);
             case "markdown":
                 // [caption](don't complete here)
                 if (/\[[^\]]*\]\([^\)]*$/.test(textBefore)) {