diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index b976edcd..5ed0c126 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -102,7 +102,7 @@ jobs:
         echo "Installing pip + wheel..."
         python -m pip install --upgrade pip wheel
         echo "Installing test dependencies..."
-        python -m pip install tox tox-gh-actions certifi decorator dict2xml pyflakes "pypdf>=4.1.0" "weasyprint==61.2" "pydyf<0.10.0"
+        python -m pip install tox tox-gh-actions certifi decorator dict2xml pyflakes "pypdf>=4.1.0" "weasyprint==64.1"
 
     - name: Generate Valid Tests
       run: |
@@ -158,7 +158,7 @@ jobs:
         echo "Installing pip + wheel..."
         python -m pip install --upgrade pip wheel
         echo "Installing test dependencies..."
-        python -m pip install tox tox-gh-actions certifi decorator dict2xml pyflakes "pypdf>=4.1.0" "weasyprint==61.2" "pydyf<0.10.0"
+        python -m pip install tox tox-gh-actions certifi decorator dict2xml pyflakes "pypdf>=4.1.0" "weasyprint==64.1"
 
     - name: Generate Valid Tests
       run: |
diff --git a/pyproject.toml b/pyproject.toml
index 8286df9a..790d8ff9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ documentation = "https://ietf-tools.github.io/xml2rfc/"
 issues = "https://github.com/ietf-tools/xml2rfc/issues"
 
 [project.optional-dependencies]
-pdf = ["weasyprint==61.2", "pydyf<0.10.0"]
+pdf = ["weasyprint==64.1"]
 
 [project.scripts]
 xml2rfc = "xml2rfc.run:main"
diff --git a/tox.ini b/tox.ini
index a93f1f82..ffec28b3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,5 +36,4 @@ deps =
     decorator
     dict2xml
     pypdf>=4.1.0
-    weasyprint==61.2
-    pydyf<0.10.0
+    weasyprint==64.1
diff --git a/xml2rfc/writers/pdf.py b/xml2rfc/writers/pdf.py
index ca9cb77b..a895e677 100644
--- a/xml2rfc/writers/pdf.py
+++ b/xml2rfc/writers/pdf.py
@@ -42,27 +42,20 @@ def __init__(self, xmlrfc, quiet=None, options=default_options, date=None):
 
         logging.basicConfig(level=logging.INFO)
 
-        # Weasyprint logger
-        wplogger = logging.getLogger('weasyprint')
-        if   self.options.quiet:
-            wplogger.setLevel(logging.CRITICAL)
-        elif self.options.verbose:
-            wplogger.setLevel(logging.WARNING)
-        elif self.options.debug:
-            wplogger.setLevel(logging.DEBUG)
-        else:
-            wplogger.setLevel(logging.ERROR)
-
-        # fontTools logger
-        ftlogger = logging.getLogger('fontTools')
-        if self.options.quiet:
-            ftlogger.setLevel(logging.CRITICAL)
-        elif self.options.verbose:
-            ftlogger.setLevel(logging.WARNING)
-        elif self.options.debug:
-            ftlogger.setLevel(logging.DEBUG)
-        else:
-            ftlogger.setLevel(logging.ERROR)
+        loggers = []
+        loggers.append(logging.getLogger("weasyprint"))
+        loggers.append(logging.getLogger("fontTools.subset"))
+        loggers.append(logging.getLogger("fontTools.ttLib"))
+        loggers.append(logging.getLogger("fontTools.varlib"))
+        for _logger in loggers:
+            if   self.options.quiet:
+                _logger.setLevel(logging.CRITICAL)
+            elif self.options.verbose:
+                _logger.setLevel(logging.WARNING)
+            elif self.options.debug:
+                _logger.setLevel(logging.DEBUG)
+            else:
+                _logger.setLevel(logging.ERROR)
 
     def pdf(self):
         if not weasyprint: