diff --git a/lib/galaxy/dependencies/__init__.py b/lib/galaxy/dependencies/__init__.py
index 17aa22c8d60d..95011848eaf6 100644
--- a/lib/galaxy/dependencies/__init__.py
+++ b/lib/galaxy/dependencies/__init__.py
@@ -288,6 +288,10 @@ def check_weasyprint(self):
         # See notes in ./conditional-requirements.txt for more information.
         return os.environ.get("GALAXY_DEPENDENCIES_INSTALL_WEASYPRINT") == "1"
 
+    def check_pydyf(self):
+        # See notes in ./conditional-requirements.txt for more information.
+        return os.environ.get("GALAXY_DEPENDENCIES_INSTALL_WEASYPRINT") == "1"
+
     def check_custos_sdk(self):
         return "custos" == self.vault_type
 
diff --git a/lib/galaxy/dependencies/conditional-requirements.txt b/lib/galaxy/dependencies/conditional-requirements.txt
index 087d825912c8..549c1c42fea2 100644
--- a/lib/galaxy/dependencies/conditional-requirements.txt
+++ b/lib/galaxy/dependencies/conditional-requirements.txt
@@ -56,7 +56,12 @@ tensorflow==2.9.3
 # xref https://github.com/galaxyproject/galaxy/pull/9651
 # Run run.sh or common_startup script with GALAXY_DEPENDENCIES_INSTALL_WEASYPRINT=1
 # to install weasyprint as part of Galaxy's conditonal dependency instalation process.
-weasyprint
+weasyprint>=61.2
+# We pin the transitive weasyprint dependency pydyf here because newer versions are
+# not compatible with the last weasyprint version that still supports python 3.8.
+# This dependency is ignored on python >= 3.9 and should be removed when deprecating
+# support for python 3.8.
+pydyf<0.11; python_version<"3.9"
 
 # AWS Batch runner
 boto3