diff --git a/libcockatrice_card/CMakeLists.txt b/libcockatrice_card/CMakeLists.txt
index d2e6ee83a..e8bb291ab 100644
--- a/libcockatrice_card/CMakeLists.txt
+++ b/libcockatrice_card/CMakeLists.txt
@@ -1,5 +1,6 @@
 set(HEADERS
     libcockatrice/card/card_info.h
+    libcockatrice/card/essence_types.h
     libcockatrice/card/card_info_comparator.h
     libcockatrice/card/card_localization.h
     libcockatrice/card/lazy_properties_hash.h