--- a/delphes-3.4.0/external/ExRootAnalysis/CMakeLists.txt
+++ b/delphes-3.4.0/external/ExRootAnalysis/CMakeLists.txt
@@ -12,4 +12,16 @@ DELPHES_GENERATE_DICTIONARY(ExRootAnalysisDict ${headers} LINKDEF ExRootAnalysis
 add_library(ExRootAnalysis OBJECT ${sources} ExRootAnalysisDict.cxx)
 
 # install headers needed by public Delphes headers to include/
-install(FILES ExRootTask.h ExRootConfReader.h DESTINATION include/ExRootAnalysis)
+install(FILES
+  ExRootAnalysisLinkDef.h
+  ExRootClassifier.h
+  ExRootConfReader.h
+  ExRootFilter.h
+  ExRootProgressBar.h
+  ExRootResult.h
+  ExRootTask.h
+  ExRootTreeBranch.h
+  ExRootTreeReader.h
+  ExRootTreeWriter.h
+  ExRootUtilities.h
+  DESTINATION include/ExRootAnalysis)