diff --git a/ChangeLog b/ChangeLog
index 27fbc7365ab78fe8b2233fb55191c98833bca11a..12cb04e02a455d01342c348b077878bf57631ddb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2019-12-06 Richard Larsson <larsson@mps.mpg.de>
+
+	* ARTS-XML-DATA-2-3-36
+	
+	* spectroscopy/Hitran_newformat: Add CO2-737 and CO2-837
+	because they were not there before.  ARTS needs to be fixed
+	to use this data.  The species handling in ARTS is, as is known
+	by all developers, not very flexible.  Even on the level where
+	there are #ifdef's littering it...
+
 2019-12-05 Richard Larsson <larsson@mps.mpg.de>
 
 	* ARTS-XML-DATA-2-3-35
diff --git a/spectroscopy/Hitran_newformat/CO2-737.xml.gz b/spectroscopy/Hitran_newformat/CO2-737.xml.gz
new file mode 100644
index 0000000000000000000000000000000000000000..08548198e176066c644d6492358475db8cdde9dc
Binary files /dev/null and b/spectroscopy/Hitran_newformat/CO2-737.xml.gz differ
diff --git a/spectroscopy/Hitran_newformat/CO2-837.xml.gz b/spectroscopy/Hitran_newformat/CO2-837.xml.gz
new file mode 100644
index 0000000000000000000000000000000000000000..69cc62c86b5e7595dfb4d7fe65851cbe53ead782
Binary files /dev/null and b/spectroscopy/Hitran_newformat/CO2-837.xml.gz differ