diff --git a/pyext/rivet/Makefile.am b/pyext/rivet/Makefile.am
--- a/pyext/rivet/Makefile.am
+++ b/pyext/rivet/Makefile.am
@@ -1,23 +1,23 @@
 EXTRA_DIST = \
 	__init__.py \
     hepdatautils.py \
     spiresbib.py util.py \
     plotinfo.py aopaths.py \
-    core.pyx rivet.pxd \
-    core.cpp
+    core.pyx rivet.pxd core.cpp \
+	hepdatapatches
+
 
 MAINTAINERCLEANFILES = core.cpp
 BUILT_SOURCES = core.cpp
 
 if WITH_CYTHON
 RIVETINCLUDE = $(top_srcdir)/include/Rivet/
 core.cpp: core.pyx rivet.pxd $(RIVETINCLUDE)/Analysis.hh $(RIVETINCLUDE)/AnalysisHandler.hh $(RIVETINCLUDE)/AnalysisLoader.hh $(RIVETINCLUDE)/Run.hh
 	cython $(srcdir)/core.pyx --cplus \
 	   -I $(srcdir) -I $(srcdir)/include \
 	   -I $(builddir) -I $(builddir)/include \
 	   -o $@
 else
 core.cpp:
 	@echo "Not (re)generating core.cpp since Cython is not installed"
 endif
-