diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2f4db1b..18af2ac 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,6 +25,7 @@ jobs:
         haxelib install tink_http
         haxelib install sha
         haxelib install thenshim
+        haxelib install hxtsdgen
         haxelib install utest
 
     - name: Tests