diff --git a/CHANGES/+fix-any-type.bugfix b/CHANGES/+fix-any-type.bugfix
new file mode 100644
index 00000000..89ea25f5
--- /dev/null
+++ b/CHANGES/+fix-any-type.bugfix
@@ -0,0 +1,2 @@
+Fixed the JSONField specification so it doesn't break ruby bindings.
+See context [here](https://github.com/pulp/pulp_rpm/issues/3639).
diff --git a/pulp_python/app/fields.py b/pulp_python/app/fields.py
new file mode 100644
index 00000000..110d2c55
--- /dev/null
+++ b/pulp_python/app/fields.py
@@ -0,0 +1,12 @@
+from drf_spectacular.utils import extend_schema_field
+from drf_spectacular.types import OpenApiTypes
+from rest_framework import serializers
+
+
+@extend_schema_field(OpenApiTypes.OBJECT)
+class JSONObjectField(serializers.JSONField):
+    """A drf JSONField override to force openapi schema to use 'object' type.
+
+    Not strictly correct, but we relied on that for a long time.
+    See: https://github.com/tfranzel/drf-spectacular/issues/1095
+    """
diff --git a/pulp_python/app/pypi/serializers.py b/pulp_python/app/pypi/serializers.py
index dc99fc80..301d7a8b 100644
--- a/pulp_python/app/pypi/serializers.py
+++ b/pulp_python/app/pypi/serializers.py
@@ -3,6 +3,7 @@
 
 from rest_framework import serializers
 from pulp_python.app.utils import DIST_EXTENSIONS
+from pulp_python.app import fields
 from pulpcore.plugin.models import Artifact
 from pulpcore.plugin.util import get_domain
 from django.db.utils import IntegrityError
@@ -28,9 +29,9 @@ class PackageMetadataSerializer(serializers.Serializer):
     """
 
     last_serial = serializers.IntegerField(help_text=_("Cache value from last PyPI sync"))
-    info = serializers.JSONField(help_text=_("Core metadata of the package"))
-    releases = serializers.JSONField(help_text=_("List of all the releases of the package"))
-    urls = serializers.JSONField()
+    info = fields.JSONObjectField(help_text=_("Core metadata of the package"))
+    releases = fields.JSONObjectField(help_text=_("List of all the releases of the package"))
+    urls = fields.JSONObjectField()
 
 
 class PackageUploadSerializer(serializers.Serializer):
diff --git a/pulp_python/app/serializers.py b/pulp_python/app/serializers.py
index ff789b53..bb588b47 100644
--- a/pulp_python/app/serializers.py
+++ b/pulp_python/app/serializers.py
@@ -8,6 +8,7 @@
 from pulpcore.plugin.util import get_domain
 
 from pulp_python.app import models as python_models
+from pulp_python.app import fields
 from pulp_python.app.utils import get_project_metadata_from_artifact, parse_project_metadata
 
 
@@ -157,7 +158,7 @@ class PythonPackageContentSerializer(core_serializers.SingleArtifactContentUploa
         required=False, allow_blank=True,
         help_text=_('A browsable URL for the project and a label for it, separated by a comma.')
     )
-    project_urls = serializers.JSONField(
+    project_urls = fields.JSONObjectField(
         required=False, default=dict,
         help_text=_('A dictionary of labels and URLs for the project.')
     )
@@ -170,28 +171,28 @@ class PythonPackageContentSerializer(core_serializers.SingleArtifactContentUploa
         required=False, allow_blank=True,
         help_text=_('Field to specify the OS and CPU for which the binary package was compiled. ')
     )
-    requires_dist = serializers.JSONField(
+    requires_dist = fields.JSONObjectField(
         required=False, default=list,
         help_text=_('A JSON list containing names of some other distutils project '
                     'required by this distribution.')
     )
-    provides_dist = serializers.JSONField(
+    provides_dist = fields.JSONObjectField(
         required=False, default=list,
         help_text=_('A JSON list containing names of a Distutils project which is contained'
                     ' within this distribution.')
     )
-    obsoletes_dist = serializers.JSONField(
+    obsoletes_dist = fields.JSONObjectField(
         required=False, default=list,
         help_text=_('A JSON list containing names of a distutils project\'s distribution which '
                     'this distribution renders obsolete, meaning that the two projects should not '
                     'be installed at the same time.')
     )
-    requires_external = serializers.JSONField(
+    requires_external = fields.JSONObjectField(
         required=False, default=list,
         help_text=_('A JSON list containing some dependency in the system that the distribution '
                     'is to be used.')
     )
-    classifiers = serializers.JSONField(
+    classifiers = fields.JSONObjectField(
         required=False, default=list,
         help_text=_('A JSON list containing classification values for a Python package.')
     )