diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2107597..ebae812 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -9,6 +9,6 @@ wheel
 # keep synchronous to requirements-readthedocs.txt
 docutils == 0.21.*
 furo
-myst-parser == 4.*
+myst-parser == 5.*
 sphinx == 8.*
 sphinx-autodoc-typehints == 3.*
diff --git a/requirements-readthedocs.txt b/requirements-readthedocs.txt
index f24bee6..9ced083 100644
--- a/requirements-readthedocs.txt
+++ b/requirements-readthedocs.txt
@@ -5,6 +5,6 @@ pyjson5 == 2.0.0
 # keep synchronous to requirements-dev.txt
 docutils == 0.21.*
 furo
-myst-parser == 4.*
+myst-parser == 5.*
 sphinx == 8.*
 sphinx-autodoc-typehints == 3.*