diff --git a/CMakeLists.txt b/CMakeLists.txt
index b572d26..59cb903 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ add_library(tox MODULE
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -Wall -Wextra -Werror-implicit-function-declaration -Wno-unused-parameter")
 
 target_link_libraries(tox toxcore)
+target_link_libraries(tox jansson)
 
 # remove lib prefix (libtox.so -> tox.so)
 set_target_properties(tox PROPERTIES PREFIX "")