diff --git a/Makefile b/Makefile
index ac9a01da0f..4847cb00c7 100644
--- a/Makefile
+++ b/Makefile
@@ -136,7 +136,7 @@ meta-data/dates: xml/issue[0-9]*.xml bin/make_dates.py
 	  rm $@.new; \
 	  $(call update,$@); \
 	else \
-	  git whatchanged --no-show-signature --pretty=%ct | $(python) bin/make_dates.py > $@; \
+	  git log --raw --no-show-signature --pretty=%ct | $(python) bin/make_dates.py > $@; \
 	fi
 
 new-papers:
diff --git a/bin/make_dates.py b/bin/make_dates.py
index e57750c56d..6c601b8b58 100644
--- a/bin/make_dates.py
+++ b/bin/make_dates.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python
 
-# usage: git whatchanged --no-show-signature --pretty=%ct | python bin/make_dates.py > dates
+# usage: git log --raw --no-show-signature --pretty=%ct | python bin/make_dates.py > dates
 
 import sys
 import re