diff --git a/HISTORY b/HISTORY
index 78e0834..02a4e71 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,3 +1,6 @@
+0.1.1 / 2011-10-18
+  * use awk regex operator
+
 0.1 / 2011-10-08
   - First release
     * supports directories with spaces
diff --git a/VERSION b/VERSION
index 49d5957..17e51c3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1
+0.1.1
diff --git a/lib/render.awk b/lib/render.awk
index 292dcc2..6fd994c 100644
--- a/lib/render.awk
+++ b/lib/render.awk
@@ -67,7 +67,7 @@ END {
 function bind_data(txt,   tag, key) {
   if (match(txt, /{{([^}]*)}}/)) {
     tag = substr(txt, RSTART, RLENGTH)
-    match(tag, /(\w|[?]).*[^}]/)
+    match(tag, /([[:alnum:]_]|[?]).*[^}]/)
     key = substr(tag, RSTART, RLENGTH)
     gsub(tag, data[key], txt)
     return bind_data(txt, data)