diff --git a/hmm.json b/hmm.json
index 42c522cf..a20ce299 100644
--- a/hmm.json
+++ b/hmm.json
@@ -39,7 +39,7 @@
     {
       "name": "hxCodec",
       "type": "haxelib",
-      "version": null
+      "version": "2.5.1"
     },
     {
       "name": "lime",
diff --git a/update/Update.hx b/update/Update.hx
index 98b502c9..aba7441a 100644
--- a/update/Update.hx
+++ b/update/Update.hx
@@ -14,8 +14,8 @@ class Update {
             // install libs
             switch(lib.type) {
                 case "haxelib":
-                    prettyPrint('Installing "${lib.name}"...');
-                    Sys.command('haxelib install ${lib.name}');
+                    prettyPrint('Installing "${lib.name}"...');             
+                    Sys.command('haxelib install ${lib.name} ${lib.version != null ? " " + lib.version : " "}');
                 case "git":
                     prettyPrint('Installing "${lib.name}" from git url "${lib.url}"');
                     Sys.command('haxelib git ${lib.name} ${lib.url}');