diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31b4c2028..e715dcefd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -591,6 +591,8 @@ if(HAVE_LIBPCRE AND HAVE_PCRE_H)
   set(ZM_PCRE 1)
 endif()
 
+find_package(nlohmann_json 3.11.0 REQUIRED)
+
 # Check for mmap and enable in all components
 set(ZM_MEM_MAPPED 0)
 set(ENABLE_MMAP no)