Added uplink/downlink splitter
diff --git a/include/grgsm/CMakeLists.txt b/include/grgsm/CMakeLists.txt
index dc9b191..61f15bf 100644
--- a/include/grgsm/CMakeLists.txt
+++ b/include/grgsm/CMakeLists.txt
@@ -23,7 +23,8 @@
 install(FILES
     plotting.hpp
     api.h
-    gsmtap.h DESTINATION include/grgsm
+    gsmtap.h
+    uplink_downlink_filter.h DESTINATION include/grgsm
 )
 
 add_subdirectory(decoding)