diff --git a/syntax/just.vim b/syntax/just.vim
index 8b004c8..787dddf 100644
--- a/syntax/just.vim
+++ b/syntax/just.vim
@@ -85,7 +85,7 @@ syn region justRecipeAttributes
    \ contains=justRecipeAttr,justRecipeAttrSep,justRecipeAttrArgs,justRecipeAttrArgError
 
 syn keyword justRecipeAttr
-   \ confirm linux macos no-cd no-exit-message no-quiet private unix windows
+   \ confirm doc group linux macos no-cd no-exit-message no-quiet private unix windows
    \ contained
 syn match justRecipeAttrSep ',' contained
 syn region justRecipeAttrArgs matchgroup=justRecipeAttr start='\V(' end='\V)' contained
diff --git a/tests/cases/recipes-with-extras.html b/tests/cases/recipes-with-extras.html
index 3219a5f..6157bcb 100644
--- a/tests/cases/recipes-with-extras.html
+++ b/tests/cases/recipes-with-extras.html
@@ -108,3 +108,19 @@
 <span class="Type">[confirm(</span><span class="String">x"Run this recipe in </span><span class="PreProc">$PWD</span><span class="String"> ?"</span><span class="Type">)]</span>
 <span class="Function">confirm_shell_expanded</span><span class="Operator">:</span>
 <span class="Number">	echo </span><span class="Delimiter">{{</span><span class="String">x"Running in </span><span class="PreProc">$PWD</span><span class="String">"</span><span class="Delimiter">}}</span>
+
+<span class="Type">[group(</span><span class="String">'foo group'</span><span class="Type">)]</span>
+<span class="Function">grouped1</span><span class="Operator">:</span>
+<span class="Number">	echo </span><span class="String">'grouped'</span>
+
+<span class="Comment"># An undocumented recipe</span>
+<span class="Type">[doc]</span>
+<span class="Function">not_documented</span><span class="Operator">:</span>
+<span class="Number">	echo foo</span>
+
+<span class="Type">[doc(</span><span class="String">'''</span>
+<span class="String">  A very documented recipe.</span>
+<span class="String">  This documentation comment spans multiple lines.</span>
+<span class="String">'''</span><span class="Type">)]</span>
+<span class="Function">long_doc</span><span class="Operator">:</span>
+<span class="Number">	echo foo foo</span>
diff --git a/tests/cases/recipes-with-extras.just b/tests/cases/recipes-with-extras.just
index 7263a56..40e977f 100644
--- a/tests/cases/recipes-with-extras.just
+++ b/tests/cases/recipes-with-extras.just
@@ -108,3 +108,19 @@ hex_digits_all:
 [confirm(x"Run this recipe in $PWD ?")]
 confirm_shell_expanded:
 	echo {{x"Running in $PWD"}}
+
+[group('foo group')]
+grouped1:
+	echo 'grouped'
+
+# An undocumented recipe
+[doc]
+not_documented:
+	echo foo
+
+[doc('''
+  A very documented recipe.
+  This documentation comment spans multiple lines.
+''')]
+long_doc:
+	echo foo foo