diff --git a/Build.md b/Build.md
index 9d5db95..e09f3a1 100644
--- a/Build.md
+++ b/Build.md
@@ -283,7 +283,7 @@ ninja -C Release
 For 2, one possible way is use MSYS2, in MSYS2 MinGW 64-bit shell:
 
 ```
-pacman -S mingw-w64-x86_64-clang mingw-w64-x86_64-clang-tools-extra mingw64/mingw-w64-x86_64-polly mingw-w64-x86_64-cmake mingw-w64-x86_64-jq mingw-w64-x86_64-ninja mingw-w64-x86_64-ncurses
+pacman -S mingw-w64-x86_64-clang mingw-w64-x86_64-clang-tools-extra mingw64/mingw-w64-x86_64-polly mingw-w64-x86_64-cmake mingw-w64-x86_64-jq mingw-w64-x86_64-ninja mingw-w64-x86_64-ncurses mingw-w64-x86_64-rapidjson
 cmake -H. -BRelease -G Ninja -DCMAKE_CXX_FLAGS=-D__STDC_FORMAT_MACROS
 ninja -C Release
 ```