diff --git a/constraints.txt b/constraints.txt
index 692431e8ff..9b9ed6254b 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -5,7 +5,7 @@ backports.ssl_match_hostname==3.7.0.1
 bcrypt==4.3.0
 beautifulsoup4==4.13.5
 certifi==2026.1.4
-chardet==5.2.0
+chardet==6.0.0.post1
 charset-normalizer==3.4.4
 coverage==7.9.2
 gevent==25.8.1
diff --git a/pyproject.toml b/pyproject.toml
index a257555198..d4beaa9d45 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies = [
     "backports.ssl-match-hostname==3.7.0.1", # required by tornado<5.0
     "patool>=1.12,<4.1",      # https://github.com/wummel/patool/blob/master/doc/changelog.txt
     "bcrypt>=3.1,<4.4",       # https://github.com/pyca/bcrypt/
-    "chardet>=3.0,<5.3",      # https://pypi.python.org/pypi/chardet
+    "chardet>=3.0,<6.1",      # https://pypi.python.org/pypi/chardet
     "babel==2.12.1",          # http://babel.pocoo.org/en/latest/changelog.html
     "pyxdg>=0.26,<0.29",      # https://freedesktop.org/wiki/Software/pyxdg/
     "Jinja2==3.1.6",          # https://jinja.palletsprojects.com/en/stable/changes/