diff --git a/Tracking/Acts/ActsTrackReconstruction/CMakeLists.txt b/Tracking/Acts/ActsTrackReconstruction/CMakeLists.txt
index 0288330b53170a4aa5a66763100d9569c798a700..9c09de06dea0b9be5f6daf09c1c6631bf31008dc 100644
--- a/Tracking/Acts/ActsTrackReconstruction/CMakeLists.txt
+++ b/Tracking/Acts/ActsTrackReconstruction/CMakeLists.txt
@@ -4,7 +4,7 @@
 atlas_subdir( ActsTrackReconstruction )
 
 # External dependencies:
-find_package( Acts COMPONENTS Core )
+find_package( Acts COMPONENTS Core PluginJson )
 find_package( Boost )
 
 atlas_add_component( ActsTrackReconstruction