diff --git a/CHANGES/plugin_api/6079.removal b/CHANGES/plugin_api/6079.removal
new file mode 100644
index 00000000000..34ba8a87d83
--- /dev/null
+++ b/CHANGES/plugin_api/6079.removal
@@ -0,0 +1,2 @@
+Removed the fallback for unserializable task return values.
+Tasks resulting from an api action should use the corresponding serializer to produce useful output. Maintenance tasks should return nothing.
diff --git a/pulp_certguard/app/__init__.py b/pulp_certguard/app/__init__.py
index 3d3ad4be6d7..afdfa86224b 100644
--- a/pulp_certguard/app/__init__.py
+++ b/pulp_certguard/app/__init__.py
@@ -6,6 +6,6 @@ class PulpCertGuardPluginAppConfig(PulpPluginAppConfig):
 
     name = "pulp_certguard.app"
     label = "certguard"
-    version = "3.96.0.dev"
+    version = "3.100.0.dev"
     python_package_name = "pulpcore"
     domain_compatible = True
diff --git a/pulp_file/app/__init__.py b/pulp_file/app/__init__.py
index fde7ecbe8e1..ad18b5a51b6 100644
--- a/pulp_file/app/__init__.py
+++ b/pulp_file/app/__init__.py
@@ -8,6 +8,6 @@ class PulpFilePluginAppConfig(PulpPluginAppConfig):
 
     name = "pulp_file.app"
     label = "file"
-    version = "3.96.0.dev"
+    version = "3.100.0.dev"
     python_package_name = "pulpcore"
     domain_compatible = True
diff --git a/pulpcore/app/apps.py b/pulpcore/app/apps.py
index dcc07db132f..936d4d0957f 100644
--- a/pulpcore/app/apps.py
+++ b/pulpcore/app/apps.py
@@ -239,7 +239,7 @@ class PulpAppConfig(PulpPluginAppConfig):
     label = "core"
 
     # The version of this app
-    version = "3.96.0.dev"
+    version = "3.100.0.dev"
 
     # The python package name providing this app
     python_package_name = "pulpcore"
diff --git a/pulpcore/app/models/task.py b/pulpcore/app/models/task.py
index ed0b2e87a0d..f93a21972a1 100644
--- a/pulpcore/app/models/task.py
+++ b/pulpcore/app/models/task.py
@@ -2,7 +2,6 @@
 Django models related to the Tasking system
 """
 
-import json
 import logging
 import traceback
 from gettext import gettext as _
@@ -233,16 +232,6 @@ def set_completed(self, result=None):
         This updates the :attr:`finished_at` and sets the :attr:`state` to :attr:`COMPLETED`.
         If `result` is provided, the :attr:`result` contains the result of the task.
         """
-        try:
-            json.dumps(result, cls=DjangoJSONEncoder)
-        except (TypeError, ValueError):
-            deprecation_logger.warning(
-                _(
-                    "The result of the {} function is not JSON-serializable and will be "
-                    "replaced with None: {}. This will raise an error in version 3.100."
-                ).format(self.name, result)
-            )
-            result = None
 
         # Only set the state to finished if it's running. This is important for when the task has
         # been canceled, so we don't move the task from canceled to finished.
diff --git a/pyproject.toml b/pyproject.toml
index 9749ea20d43..2b3e3c2ffdc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ build-backend = 'setuptools.build_meta'
 
 [project]
 name = "pulpcore"
-version = "3.96.0.dev"
+version = "3.100.0.dev"
 description = "Pulp Django Application and Related Modules"
 readme = "README.md"
 authors = [
@@ -204,7 +204,7 @@ ignore = [
 [tool.bumpversion]
 # This section is managed by the plugin template. Do not edit manually.
 
-current_version = "3.96.0.dev"
+current_version = "3.100.0.dev"
 commit = false
 tag = false
 parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<alpha>0a)?(?P<patch>\\d+)(\\.(?P<release>[a-z]+))?"