diff --git a/version_54/README b/version_54/README
index e8da33fed6c919c051b9f0d195e9e673e62f842c..f7d00b1e790e63be0bd826778d4b5913db6e178b 100644
--- a/version_54/README
+++ b/version_54/README
@@ -207,6 +207,9 @@ from r423             ISRF_filetype = 3 must use a new set of ISRFs: (the above
 
 In addition           ISRF_filetype = 0 uses only CMB, useful for testing
 
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+Note added 3 Nov 2020: DM extensions to v54 from Andrey Egorov are at https://github.com/a-e-egorov/GALPROP_DM
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 10. Notes on versions, bugs etc.
 11. Oct 2009 AWS A bug in gen_secondary_positron_source.cc since 2006 resulted in secondary electrons equal to secondary positrons. The positrons were corrected. The bug was fixed by TAP in r343 and documented by AWS in rev 344.
@@ -300,7 +303,7 @@ documented by AWS,  updated 20150417 r2754
 documented by AWS,  updated 20150630 r2765 see 39.
 documented by AWS,          20170418 moved from sourceforge to gitlab see 42
 documented by AWS,  updated 20200424 in gitlab see 43
-
+documented by AWS,  updated 20201103 note on Egorov DM extensions