diff --git a/ANSI-References.md b/ANSI-References.md
index 13e8861..45901df 100644
--- a/ANSI-References.md
+++ b/ANSI-References.md
@@ -7,6 +7,6 @@ Below is a fairly comprehensive list of ANSI references:
 * XTerm testing resources: https://systemundertest.org/xterm/
 * ISO 2022 (describes some obscure character-encoding related escape sequences): https://en.wikipedia.org/wiki/ISO/IEC_2022
 * 256-color escape sequences: http://misc.flogisoft.com/bash/tip_colors_and_formatting
-* ECMA - Control Functions for Coded Character Sets: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf
-* ECMA - Character Code Structure and Extension Techniques: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-035.pdf
+* ECMA - Control Functions for Coded Character Sets: https://www.ecma-international.org/wp-content/uploads/ECMA-48_5th_edition_june_1991.pdf
+* ECMA - Character Code Structure and Extension Techniques: https://www.ecma-international.org/wp-content/uploads/ECMA-35_6th_edition_december_1994.pdf
 * Terminal I/O: http://www.iakovlev.org/index.html?p=1169&m=1&l1=5
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