diff --git a/lib/pegjs/mustache/name-character.pegjs b/lib/pegjs/mustache/name-character.pegjs
index 53f6d06..e74d8ea 100644
--- a/lib/pegjs/mustache/name-character.pegjs
+++ b/lib/pegjs/mustache/name-character.pegjs
@@ -1,7 +1,7 @@
 start = newMustacheNameChar
 
 // a character that can be in a mustache name
-newMustacheNameChar = [-_/A-Za-z0-9] / arrayIndex / '.' / '@'
+newMustacheNameChar = [-_/A-Za-z0-9] / arrayIndex / '.' / '@' / '::'
 
 // Ember requires that array indexes have a . before them
 arrayIndex = '.[' newMustacheNameChar* ']'
diff --git a/tests/integration/glimmer-component-test.js b/tests/integration/glimmer-component-test.js
index dd5c279..8c3abdb 100644
--- a/tests/integration/glimmer-component-test.js
+++ b/tests/integration/glimmer-component-test.js
@@ -136,3 +136,11 @@ test('named block support', function() {
 
   compilesTo(emblem, '<x-modal><@header as |@title|>Header {{title}}</@header><@body>Body</@body><@footer>Footer</@footer></x-modal>');
 });
+
+test('module namespaces', function() {
+  var emblem = w(
+    '% my-addon::foo'
+  )
+
+  compilesTo(emblem, '<my-addon::foo></my-addon::foo>');
+});
diff --git a/tests/integration/mustaches-test.js b/tests/integration/mustaches-test.js
index 5d3b900..5536adf 100644
--- a/tests/integration/mustaches-test.js
+++ b/tests/integration/mustaches-test.js
@@ -562,3 +562,11 @@ test('named block with block param', function() {
 
   compilesTo(emblem, '{{#x-layout as |@widget|}}{{#@widget as |a b c|}}Hi.{{/@widget}}{{/x-layout}}');
 });
+
+test('module namespaces', function() {
+  var emblem = w(
+    '= my-addon::foo'
+  )
+
+  compilesTo(emblem, '{{my-addon::foo}}');
+});