diff --git a/README.md b/README.md
index 7bbf82a..1259e0c 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ after building and/or installing dependencies:
 
 and, the development versions of the following libraries:
 
+- nlohmann json
 - Cairo
 - SDL2
 - SDL2_image