diff --git a/brozzler/worker.py b/brozzler/worker.py
index 907ed61..6399040 100644
--- a/brozzler/worker.py
+++ b/brozzler/worker.py
@@ -198,7 +198,7 @@ class BrozzlerWorker:
         self.logger.info("brozzling {}".format(page))
         ydl_fetches = None
         outlinks = set()
-        if enable_youtube_dl:
+        if enable_youtube_dl and not page.url.lower().endswith(".pdf"):
             try:
                 ydl_fetches, outlinks = ydl.do_youtube_dl(self, site, page)
             except brozzler.ReachedLimit as e:
diff --git a/setup.py b/setup.py
index e176497..a1b89d8 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ def find_package_data(package):
 
 setuptools.setup(
         name='brozzler',
-        version='1.5.42',
+        version='1.5.43',
         description='Distributed web crawling with browsers',
         url='https://github.com/internetarchive/brozzler',
         author='Noah Levitt',
@@ -65,14 +65,14 @@ setuptools.setup(
         },
         install_requires=[
             'PyYAML>=5.1',
-            'yt_dlp',
+            'yt_dlp<2023.11.16',
             'reppy==0.3.4',
             'requests>=2.21',
             'websocket-client>=0.39.0,<=0.48.0',
             'pillow>=5.2.0',
             'urlcanon>=0.1.dev23',
             'doublethink @ git+https://github.com/internetarchive/doublethink.git@Py311',
-            'rethinkdb>=2.4.9,<2.5',
+            'rethinkdb<2.4.10',
             'cerberus>=1.0.1',
             'jinja2>=2.10',
             'cryptography>=2.3',