diff --git a/requirements.txt b/requirements.txt
index 7a945c3bf..65feac535 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,16 +11,19 @@ check-wheel-contents == 0.4.0
 docformatter == 1.7.5
 # https://mdformat.readthedocs.io/en/stable/users/plugins.html
 mdformat == 0.7.16
-# XXX: mdformat_admon 1.0.2 conflicts with mdformat-gfm == 0.3.5. See:
-# https://github.com/KyleKing/mdformat-admon/issues/15
-# https://github.com/hukkin/mdformat-gfm/issues/27
-mdformat_admon == 1.0.1
+mdformat_admon == 1.0.2
 mdformat-black == 0.1.1
 mdformat-config == 0.1.3
 mdformat_deflist == 0.1.2
 mdformat_footnote == 0.1.1
 mdformat_frontmatter == 2.0.1
-mdformat-gfm == 0.3.5
+# Use the unreleased version of mdformat-gfm 0.3.6, which is relaxing capped dependency on
+# mdit-py-plugins < 0.4 . This allows for mdformat-admon to be upgraded to 1.0.2. See:
+# https://github.com/hukkin/mdformat-gfm/issues/27
+# https://github.com/hukkin/mdformat-gfm/pull/28
+# https://github.com/KyleKing/mdformat-admon/issues/15
+# mdformat-gfm == 0.3.6
+mdformat-gfm @ git+https://github.com/hukkin/mdformat-gfm.git@e60f449674d8f8dc91f9e348dd1c08d1ddc244ff
 mdformat_myst == 0.1.5
 mdformat_pelican == 0.1.0
 mdformat_pyproject == 0.0.1