diff --git a/CMakeLists.txt b/CMakeLists.txt
index 756e3790ed0ae1f69b0059330f20e2ce7ef22b2e..22138505ff9930f4029865452f06d4857446c518 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -544,7 +544,7 @@ macro (CMAKE_BUILD_UTILITIES)
   #---------------------------------------------------------------------
   # Build jsoncpp library.
   if(CMAKE_USE_SYSTEM_JSONCPP)
-    find_package(JsonCpp)
+    find_package(JsonCpp 1.4.1)
     if(NOT JsonCpp_FOUND)
       message(FATAL_ERROR
         "CMAKE_USE_SYSTEM_JSONCPP is ON but a JsonCpp is not found!")