diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index cd40e1c492..9c29fae57d 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -144,6 +144,12 @@ Changed
 
 * Update ``pyyaml`` dependency to the latest stable version (5.4). #5207
 
+* Update various dependencies to latest stable versions (``bcrypt``, ``appscheduler``, ``pytz``,
+  ``python-dateutil``, ``psutil``, ``passlib``, ``gunicorn``, ``flex``, ``cryptography``.
+  ``eventlet``, ``greenlet``, ``webob`` , ``mongoengine``, ``pymongo``, ``requests``). #5215
+
+  Contributed by @Kami.
+
 Improvements
 ~~~~~~~~~~~~
 
diff --git a/fixed-requirements.txt b/fixed-requirements.txt
index fe0b881b1d..7fd4b72cd3 100644
--- a/fixed-requirements.txt
+++ b/fixed-requirements.txt
@@ -1,43 +1,43 @@
 # Packages versions fixed for the whole st2 stack
 # Note: amqp is used by kombu
 amqp==2.5.2
-apscheduler==3.6.3
+apscheduler==3.7.0
 # requests 2.23 requires chardet < 3.1.0
 chardet<3.1.0
 # NOTE: 2.0 version breaks pymongo work with hosts
 dnspython>=1.16.0,<2.0.0
-cryptography==3.3.2
+cryptography==3.4.7
 # Note: 0.20.0 removed select.poll() on which some of our code and libraries we
 # depend on rely
-eventlet==0.25.1
-flex==6.14.0
+eventlet==0.30.2
+flex==6.14.1
 gitpython==2.1.15
 # Note: greenlet is used by eventlet
-greenlet==0.4.15
-gunicorn==19.9.0
+greenlet==1.0.0
+gunicorn==20.1.0
 jsonpath-rw==1.4.0
 jsonschema==2.6.0
 kombu==4.6.6
 lockfile==0.12.2
-mongoengine==0.18.2
+mongoengine==0.23.0
 networkx==1.11
 # NOTE: Recent version substantially affect the performance and add big import time overhead
 # See https://github.com/StackStorm/st2/issues/4160#issuecomment-394386433 for details
 oslo.config>=1.12.1,<1.13
 oslo.utils<5.0,>=4.0.0
 paramiko==2.7.2
-passlib==1.7.1
+passlib==1.7.4
 prance==0.9.0
 prompt-toolkit==1.0.15
 pyinotify==0.9.6; platform_system=="Linux"
-pymongo==3.10.0
+pymongo==3.11.3
 python-editor==1.0.4
 python-gnupg==0.4.5
 python-keyczar==0.716
-pytz==2019.1
+pytz==2021.1
 pywinrm==0.3.0
 pyyaml==5.4
-requests[security]==2.23.0
+requests[security]==2.25.1
 retrying==1.3.3
 routes==2.4.1
 semver==2.9.0
@@ -49,17 +49,17 @@ tooz==2.8.0
 # Note: virtualenv embeds wheels for pip, wheel, and setuptools. So pinning virtualenv pins those as well.
 # virtualenv==20.4.0 (<21) has pip==20.3.3 wheel==0.36.2 setuptools==51.3.3
 virtualenv==20.4.0
-webob==1.8.5
+webob==1.8.7
 zake==0.2.2
 # test requirements below
-bcrypt==3.1.7
+bcrypt==3.2.0
 jinja2==2.11.3
-mock==2.0.0
+mock==4.0.3
 more-itertools==5.0.0
 nose-timer==0.7.5
 nose-parallel==0.3.1
-psutil==5.6.6
-python-dateutil==2.8.0
+psutil==5.8.0
+python-dateutil==2.8.1
 python-statsd==2.1.0
 prometheus_client==0.1.1
 ujson==1.35
diff --git a/requirements.txt b/requirements.txt
index de82a2f670..aa346668e6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,29 +7,29 @@
 # update the component requirements.txt
 RandomWords
 amqp==2.5.2
-apscheduler==3.6.3
+apscheduler==3.7.0
 argcomplete
-bcrypt==3.1.7
+bcrypt==3.2.0
 chardet<3.1.0
-cryptography==3.3.2
+cryptography==3.4.7
 dnspython>=1.16.0,<2.0.0
-eventlet==0.25.1
-flex==6.14.0
+eventlet==0.30.2
+flex==6.14.1
 git+https://github.com/StackStorm/logshipper.git@stackstorm_patched#egg=logshipper
 git+https://github.com/StackStorm/orquesta.git@v1.3.0#egg=orquesta
 git+https://github.com/StackStorm/st2-auth-backend-flat-file.git@master#egg=st2-auth-backend-flat-file
 git+https://github.com/StackStorm/st2-auth-ldap.git@master#egg=st2-auth-ldap
 git+https://github.com/StackStorm/st2-rbac-backend.git@master#egg=st2-rbac-backend
 gitpython==2.1.15
-greenlet==0.4.15
-gunicorn==19.9.0
+greenlet==1.0.0
+gunicorn==20.1.0
 jinja2==2.11.3
 jsonpath-rw==1.4.0
 jsonschema==2.6.0
 kombu==4.6.6
 lockfile==0.12.2
-mock==2.0.0
-mongoengine==0.18.2
+mock==4.0.3
+mongoengine==0.23.0
 more-itertools==5.0.0
 networkx==1.11
 nose
@@ -39,22 +39,22 @@ orjson==3.5.1
 oslo.config>=1.12.1,<1.13
 oslo.utils<5.0,>=4.0.0
 paramiko==2.7.2
-passlib==1.7.1
+passlib==1.7.4
 prettytable
 prompt-toolkit==1.0.15
-psutil==5.6.6
+psutil==5.8.0
 pyinotify==0.9.6; platform_system=="Linux"
-pymongo==3.10.0
+pymongo==3.11.3
 pyrabbit
-python-dateutil==2.8.0
+python-dateutil==2.8.1
 python-editor==1.0.4
 python-json-logger
 python-statsd==2.1.0
-pytz==2019.1
+pytz==2021.1
 pywinrm==0.3.0
 pyyaml==5.4
 rednose
-requests[security]==2.23.0
+requests[security]==2.25.1
 retrying==1.3.3
 routes==2.4.1
 semver==2.9.0
@@ -65,7 +65,7 @@ stevedore==1.30.1
 tooz==2.8.0
 udatetime==0.0.16
 unittest2
-webob==1.8.5
+webob==1.8.7
 webtest
 zake==0.2.2
 zipp>=0.5,<=1.0.0
diff --git a/st2actions/requirements.txt b/st2actions/requirements.txt
index 49d891660c..f8ab2a2b4a 100644
--- a/st2actions/requirements.txt
+++ b/st2actions/requirements.txt
@@ -5,9 +5,9 @@
 # If you want to update depdencies for a single component, modify the
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
-apscheduler==3.6.3
+apscheduler==3.7.0
 chardet<3.1.0
-eventlet==0.25.1
+eventlet==0.30.2
 git+https://github.com/StackStorm/logshipper.git@stackstorm_patched#egg=logshipper
 gitpython==2.1.15
 jinja2==2.11.3
@@ -16,8 +16,8 @@ lockfile==0.12.2
 oslo.config>=1.12.1,<1.13
 oslo.utils<5.0,>=4.0.0
 pyinotify==0.9.6; platform_system=="Linux"
-python-dateutil==2.8.0
+python-dateutil==2.8.1
 python-json-logger
 pyyaml==5.4
-requests[security]==2.23.0
+requests[security]==2.25.1
 six==1.13.0
diff --git a/st2api/requirements.txt b/st2api/requirements.txt
index 0b0789e9c0..09b9fc1353 100644
--- a/st2api/requirements.txt
+++ b/st2api/requirements.txt
@@ -5,13 +5,13 @@
 # If you want to update depdencies for a single component, modify the
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
-eventlet==0.25.1
-gunicorn==19.9.0
+eventlet==0.30.2
+gunicorn==20.1.0
 jsonschema==2.6.0
 kombu==4.6.6
-mongoengine==0.18.2
+mongoengine==0.23.0
 oslo.config>=1.12.1,<1.13
 oslo.utils<5.0,>=4.0.0
-pymongo==3.10.0
+pymongo==3.11.3
 simplejson
 six==1.13.0
diff --git a/st2api/st2api/controllers/v1/actionexecutions.py b/st2api/st2api/controllers/v1/actionexecutions.py
index 1c2ea1a6e1..f471889fb7 100644
--- a/st2api/st2api/controllers/v1/actionexecutions.py
+++ b/st2api/st2api/controllers/v1/actionexecutions.py
@@ -108,7 +108,7 @@ def _handle_schedule_execution(
         :type liveaction: :class:`LiveActionAPI`
         """
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         # Assert action ref is valid
         action_ref = liveaction_api.action
@@ -799,7 +799,7 @@ def put(self, id, liveaction_api, requester_user, show_secrets=False):
 
         """
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         from_model_kwargs = {
             "mask_secrets": self._get_mask_secrets(
@@ -929,7 +929,7 @@ def delete(self, id, requester_user, show_secrets=False):
 
         """
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         from_model_kwargs = {
             "mask_secrets": self._get_mask_secrets(
diff --git a/st2api/st2api/controllers/v1/aliasexecution.py b/st2api/st2api/controllers/v1/aliasexecution.py
index ecbea2028e..4e0f780896 100644
--- a/st2api/st2api/controllers/v1/aliasexecution.py
+++ b/st2api/st2api/controllers/v1/aliasexecution.py
@@ -118,7 +118,7 @@ def _post(self, payload, requester_user, show_secrets=False, match_multiple=Fals
             return
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         format_str = payload.format or ""
         command = payload.command or ""
diff --git a/st2api/st2api/controllers/v1/keyvalue.py b/st2api/st2api/controllers/v1/keyvalue.py
index 8cbef93ddd..2349e76b43 100644
--- a/st2api/st2api/controllers/v1/keyvalue.py
+++ b/st2api/st2api/controllers/v1/keyvalue.py
@@ -78,7 +78,7 @@ def get_one(
             scope = FULL_USER_SCOPE
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         scope = get_datastore_full_scope(scope)
         self._validate_scope(scope=scope)
@@ -156,7 +156,7 @@ def get_all(
             scope = FULL_USER_SCOPE
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         scope = get_datastore_full_scope(scope)
 
@@ -284,7 +284,7 @@ def put(self, kvp, name, requester_user, scope=FULL_SYSTEM_SCOPE):
             scope = FULL_SYSTEM_SCOPE
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         scope = getattr(kvp, "scope", scope)
         scope = get_datastore_full_scope(scope)
@@ -362,7 +362,7 @@ def delete(self, name, requester_user, scope=FULL_SYSTEM_SCOPE, user=None):
             scope = FULL_SYSTEM_SCOPE
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         scope = get_datastore_full_scope(scope)
         self._validate_scope(scope=scope)
diff --git a/st2api/st2api/controllers/v1/packs.py b/st2api/st2api/controllers/v1/packs.py
index 75da16e5e5..5b05ae268b 100644
--- a/st2api/st2api/controllers/v1/packs.py
+++ b/st2api/st2api/controllers/v1/packs.py
@@ -104,7 +104,7 @@ def post(self, pack_install_request, requester_user=None):
             parameters["skip_dependencies"] = True
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         new_liveaction_api = LiveActionCreateAPI(
             action="packs.install", parameters=parameters, user=requester_user.name
@@ -127,7 +127,7 @@ def post(self, pack_uninstall_request, ref_or_id=None, requester_user=None):
             parameters = {"packs": pack_uninstall_request.packs}
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         new_liveaction_api = LiveActionCreateAPI(
             action="packs.uninstall", parameters=parameters, user=requester_user.name
diff --git a/st2api/st2api/controllers/v1/rules.py b/st2api/st2api/controllers/v1/rules.py
index 89f9e63531..1119e0d5cc 100644
--- a/st2api/st2api/controllers/v1/rules.py
+++ b/st2api/st2api/controllers/v1/rules.py
@@ -130,7 +130,7 @@ def post(self, rule, requester_user):
         )
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
 
         # Validate that the authenticated user is admin if user query param is provided
         user = requester_user.name
@@ -195,7 +195,7 @@ def put(self, rule, rule_ref_or_id, requester_user):
         )
 
         if not requester_user:
-            requester_user = UserDB(cfg.CONF.system_user.user)
+            requester_user = UserDB(name=cfg.CONF.system_user.user)
         # Validate that the authenticated user is admin if user query param is provided
         user = requester_user.name
         rbac_utils.assert_user_is_admin_if_user_query_param_is_provided(
diff --git a/st2api/tests/unit/controllers/v1/test_executions.py b/st2api/tests/unit/controllers/v1/test_executions.py
index beb6b8a529..2f9803281f 100644
--- a/st2api/tests/unit/controllers/v1/test_executions.py
+++ b/st2api/tests/unit/controllers/v1/test_executions.py
@@ -1651,7 +1651,7 @@ def test_get_single_attribute_success(self):
 
         resp = self.app.get("/v1/executions/%s/attribute/trigger_instance" % (exec_id))
         self.assertEqual(resp.status_int, 200)
-        self.assertEqual(resp.json, None)
+        self.assertEqual(resp.json, {})
 
         data = {}
         data["status"] = action_constants.LIVEACTION_STATUS_SUCCEEDED
diff --git a/st2api/tests/unit/controllers/v1/test_executions_auth.py b/st2api/tests/unit/controllers/v1/test_executions_auth.py
index f1045a7d54..9f3842d4d5 100644
--- a/st2api/tests/unit/controllers/v1/test_executions_auth.py
+++ b/st2api/tests/unit/controllers/v1/test_executions_auth.py
@@ -119,6 +119,10 @@ def mock_get_token(*args, **kwargs):
     return USR_TOKEN
 
 
+def mock_get_by_name(name):
+    return UserDB(name=name)
+
+
 @mock.patch.object(PoolPublisher, "publish", mock.MagicMock())
 class ActionExecutionControllerTestCaseAuthEnabled(FunctionalTest):
 
@@ -126,7 +130,7 @@ class ActionExecutionControllerTestCaseAuthEnabled(FunctionalTest):
 
     @classmethod
     @mock.patch.object(Token, "get", mock.MagicMock(side_effect=mock_get_token))
-    @mock.patch.object(User, "get_by_name", mock.MagicMock(side_effect=UserDB))
+    @mock.patch.object(User, "get_by_name", mock_get_by_name)
     @mock.patch.object(
         action_validator, "validate_action", mock.MagicMock(return_value=True)
     )
diff --git a/st2auth/requirements.txt b/st2auth/requirements.txt
index bf086b6b83..6b6016bcb6 100644
--- a/st2auth/requirements.txt
+++ b/st2auth/requirements.txt
@@ -5,13 +5,13 @@
 # If you want to update depdencies for a single component, modify the
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
-bcrypt==3.1.7
-eventlet==0.25.1
+bcrypt==3.2.0
+eventlet==0.30.2
 git+https://github.com/StackStorm/st2-auth-backend-flat-file.git@master#egg=st2-auth-backend-flat-file
 git+https://github.com/StackStorm/st2-auth-ldap.git@master#egg=st2-auth-ldap
-gunicorn==19.9.0
+gunicorn==20.1.0
 oslo.config>=1.12.1,<1.13
-passlib==1.7.1
-pymongo==3.10.0
+passlib==1.7.4
+pymongo==3.11.3
 six==1.13.0
 stevedore==1.30.1
diff --git a/st2client/requirements.txt b/st2client/requirements.txt
index dadb8f6b19..ab436c7878 100644
--- a/st2client/requirements.txt
+++ b/st2client/requirements.txt
@@ -7,18 +7,18 @@
 # update the component requirements.txt
 argcomplete
 chardet<3.1.0
-cryptography==3.3.2
+cryptography==3.4.7
 jsonpath-rw==1.4.0
 jsonschema==2.6.0
 more-itertools==5.0.0
 orjson==3.5.1
 prettytable
 prompt-toolkit==1.0.15
-python-dateutil==2.8.0
+python-dateutil==2.8.1
 python-editor==1.0.4
-pytz==2019.1
+pytz==2021.1
 pyyaml==5.4
-requests[security]==2.23.0
+requests[security]==2.25.1
 six==1.13.0
 sseclient-py==1.7
 zipp>=0.5,<=1.0.0
diff --git a/st2common/requirements.txt b/st2common/requirements.txt
index 67993ed05b..7cb83042a2 100644
--- a/st2common/requirements.txt
+++ b/st2common/requirements.txt
@@ -6,36 +6,36 @@
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
 amqp==2.5.2
-apscheduler==3.6.3
+apscheduler==3.7.0
 chardet<3.1.0
-cryptography==3.3.2
+cryptography==3.4.7
 dnspython>=1.16.0,<2.0.0
-eventlet==0.25.1
-flex==6.14.0
+eventlet==0.30.2
+flex==6.14.1
 git+https://github.com/StackStorm/orquesta.git@v1.3.0#egg=orquesta
 git+https://github.com/StackStorm/st2-rbac-backend.git@master#egg=st2-rbac-backend
 gitpython==2.1.15
-greenlet==0.4.15
+greenlet==1.0.0
 jinja2==2.11.3
 jsonpath-rw==1.4.0
 jsonschema==2.6.0
 kombu==4.6.6
 lockfile==0.12.2
-mongoengine==0.18.2
+mongoengine==0.23.0
 networkx==1.11
 orjson==3.5.1
 oslo.config>=1.12.1,<1.13
 paramiko==2.7.2
-pymongo==3.10.0
-python-dateutil==2.8.0
+pymongo==3.11.3
+python-dateutil==2.8.1
 python-statsd==2.1.0
 pyyaml==5.4
-requests[security]==2.23.0
+requests[security]==2.25.1
 retrying==1.3.3
 routes==2.4.1
 semver==2.9.0
 six==1.13.0
 tooz==2.8.0
 udatetime==0.0.16
-webob==1.8.5
+webob==1.8.7
 zake==0.2.2
diff --git a/st2common/st2common/exceptions/workflow.py b/st2common/st2common/exceptions/workflow.py
index 2a346819be..370030c6ec 100644
--- a/st2common/st2common/exceptions/workflow.py
+++ b/st2common/st2common/exceptions/workflow.py
@@ -30,7 +30,7 @@ def retry_on_connection_errors(exc):
     LOG.warning("Determining if exception %s should be retried.", type(exc))
 
     retrying = isinstance(exc, tooz.coordination.ToozConnectionError) or isinstance(
-        exc, mongoengine.connection.MongoEngineConnectionError
+        exc, mongoengine.connection.ConnectionFailure
     )
 
     if retrying:
diff --git a/st2common/st2common/garbage_collection/inquiries.py b/st2common/st2common/garbage_collection/inquiries.py
index ad95126b21..2381472a73 100644
--- a/st2common/st2common/garbage_collection/inquiries.py
+++ b/st2common/st2common/garbage_collection/inquiries.py
@@ -90,7 +90,7 @@ def purge_inquiries(logger):
                 # Request that root workflow resumes
                 root_liveaction = action_service.get_root_liveaction(liveaction_db)
                 action_service.request_resume(
-                    root_liveaction, UserDB(cfg.CONF.system_user.user)
+                    root_liveaction, UserDB(name=cfg.CONF.system_user.user)
                 )
 
     logger.info('Marked %s ttl-expired Inquiries as "timed out".' % (gc_count))
diff --git a/st2common/st2common/models/utils/profiling.py b/st2common/st2common/models/utils/profiling.py
index 47add2adc3..55d6b486c7 100644
--- a/st2common/st2common/models/utils/profiling.py
+++ b/st2common/st2common/models/utils/profiling.py
@@ -83,7 +83,7 @@ def log_query_and_profile_data_for_queryset(queryset):
     # Note: We need to clone the queryset when using explain because explain advances the cursor
     # internally which changes the function result
     cloned_queryset = queryset.clone()
-    explain_info = cloned_queryset.explain(format=True)
+    explain_info = cloned_queryset.explain()
 
     if mongo_query is not None and collection_name is not None:
         mongo_shell_query = construct_mongo_shell_query(
diff --git a/st2common/st2common/persistence/db_init.py b/st2common/st2common/persistence/db_init.py
index 678ca71ccd..ed6d080423 100644
--- a/st2common/st2common/persistence/db_init.py
+++ b/st2common/st2common/persistence/db_init.py
@@ -34,9 +34,7 @@ def _retry_if_connection_error(error):
     # Ideally, a special execption or atleast some exception code.
     # If this does become an issue look for "Cannot connect to database" at the
     # start of error msg.
-    is_connection_error = isinstance(
-        error, mongoengine.connection.MongoEngineConnectionError
-    )
+    is_connection_error = isinstance(error, mongoengine.connection.ConnectionFailure)
     if is_connection_error:
         LOG.warn("Retry on ConnectionError - %s", error)
     return is_connection_error
diff --git a/st2common/st2common/services/inquiry.py b/st2common/st2common/services/inquiry.py
index a8026c8ab1..1301a62c4b 100644
--- a/st2common/st2common/services/inquiry.py
+++ b/st2common/st2common/services/inquiry.py
@@ -61,7 +61,7 @@ def check_inquiry(inquiry):
 def check_permission(inquiry, requester):
     # Normalize user object.
     user_db = (
-        auth_db_models.UserDB(requester)
+        auth_db_models.UserDB(name=requester)
         if isinstance(requester, six.string_types)
         else requester
     )
diff --git a/st2common/tests/unit/services/test_workflow_service_retries.py b/st2common/tests/unit/services/test_workflow_service_retries.py
index baa79c6954..f39315a308 100644
--- a/st2common/tests/unit/services/test_workflow_service_retries.py
+++ b/st2common/tests/unit/services/test_workflow_service_retries.py
@@ -196,8 +196,8 @@ def test_retries_exhausted_from_coordinator_connection_error(self):
         "update_task_state",
         mock.MagicMock(
             side_effect=[
-                mongoengine.connection.MongoEngineConnectionError(),
-                mongoengine.connection.MongoEngineConnectionError(),
+                mongoengine.connection.ConnectionFailure(),
+                mongoengine.connection.ConnectionFailure(),
                 None,
             ]
         ),
@@ -227,7 +227,7 @@ def test_recover_from_database_connection_error(self):
     @mock.patch.object(
         wf_svc,
         "update_task_state",
-        mock.MagicMock(side_effect=mongoengine.connection.MongoEngineConnectionError()),
+        mock.MagicMock(side_effect=mongoengine.connection.ConnectionFailure()),
     )
     def test_retries_exhausted_from_database_connection_error(self):
         wf_meta = self.get_wf_fixture_meta_data(TEST_PACK_PATH, "sequential.yaml")
@@ -248,7 +248,7 @@ def test_retries_exhausted_from_database_connection_error(self):
 
         # The connection error should raise if retries are exhaused.
         self.assertRaises(
-            mongoengine.connection.MongoEngineConnectionError,
+            mongoengine.connection.ConnectionFailure,
             wf_svc.handle_action_execution_completion,
             tk1_ac_ex_db,
         )
diff --git a/st2common/tests/unit/test_exceptions_workflow.py b/st2common/tests/unit/test_exceptions_workflow.py
index a9fbcc549f..fbb6dbd1fe 100644
--- a/st2common/tests/unit/test_exceptions_workflow.py
+++ b/st2common/tests/unit/test_exceptions_workflow.py
@@ -42,7 +42,7 @@ def test_retry_on_connection_errors(self):
         exc = coordination.ToozConnectionError("foobar")
         self.assertTrue(wf_exc.retry_on_connection_errors(exc))
 
-        exc = mongoengine.connection.MongoEngineConnectionError()
+        exc = mongoengine.connection.ConnectionFailure()
         self.assertTrue(wf_exc.retry_on_connection_errors(exc))
 
     def test_do_not_retry_on_connection_errors(self):
diff --git a/st2exporter/requirements.txt b/st2exporter/requirements.txt
index c54ceb64f3..a713318929 100644
--- a/st2exporter/requirements.txt
+++ b/st2exporter/requirements.txt
@@ -5,7 +5,7 @@
 # If you want to update depdencies for a single component, modify the
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
-eventlet==0.25.1
+eventlet==0.30.2
 kombu==4.6.6
 oslo.config>=1.12.1,<1.13
 six==1.13.0
diff --git a/st2reactor/requirements.txt b/st2reactor/requirements.txt
index 9587a1b4bc..851c811ad9 100644
--- a/st2reactor/requirements.txt
+++ b/st2reactor/requirements.txt
@@ -5,11 +5,11 @@
 # If you want to update depdencies for a single component, modify the
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
-apscheduler==3.6.3
-eventlet==0.25.1
+apscheduler==3.7.0
+eventlet==0.30.2
 jsonpath-rw==1.4.0
 jsonschema==2.6.0
 kombu==4.6.6
 oslo.config>=1.12.1,<1.13
-python-dateutil==2.8.0
+python-dateutil==2.8.1
 six==1.13.0
diff --git a/st2reactor/tests/integration/test_sensor_watcher.py b/st2reactor/tests/integration/test_sensor_watcher.py
index 6caee09c7f..2c062aee41 100644
--- a/st2reactor/tests/integration/test_sensor_watcher.py
+++ b/st2reactor/tests/integration/test_sensor_watcher.py
@@ -15,7 +15,8 @@
 
 from __future__ import absolute_import
 
-from monotonic import monotonic
+from time import monotonic
+
 from pyrabbit.api import Client
 
 from st2common.util import concurrency
diff --git a/st2stream/requirements.txt b/st2stream/requirements.txt
index 1e6bea91e5..d41dc6d252 100644
--- a/st2stream/requirements.txt
+++ b/st2stream/requirements.txt
@@ -5,12 +5,12 @@
 # If you want to update depdencies for a single component, modify the
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
-eventlet==0.25.1
-gunicorn==19.9.0
+eventlet==0.30.2
+gunicorn==20.1.0
 jsonschema==2.6.0
 kombu==4.6.6
-mongoengine==0.18.2
+mongoengine==0.23.0
 oslo.config>=1.12.1,<1.13
 oslo.utils<5.0,>=4.0.0
-pymongo==3.10.0
+pymongo==3.11.3
 six==1.13.0
diff --git a/st2tests/requirements.txt b/st2tests/requirements.txt
index ab8092f93e..239f75626e 100644
--- a/st2tests/requirements.txt
+++ b/st2tests/requirements.txt
@@ -6,11 +6,11 @@
 # in-requirements.txt for that component and then run 'make requirements' to
 # update the component requirements.txt
 RandomWords
-mock==2.0.0
+mock==4.0.3
 nose
 nose-parallel==0.3.1
 nose-timer==0.7.5
-psutil==5.6.6
+psutil==5.8.0
 pyrabbit
 rednose
 unittest2
diff --git a/test-requirements-py27.txt b/test-requirements-py27.txt
deleted file mode 100644
index e761f37185..0000000000
--- a/test-requirements-py27.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-# NOTE: codecov only supports coverage==4.5.2
-coverage==4.5.2
-pep8==1.7.1
-st2flake8==0.1.0
-astroid==1.6.5
-pylint==1.9.4
-pylint-plugin-utils>=0.4
-bandit==1.5.1
-ipython<6.0.0
-mock==3.0.5
-nose>=1.3.7
-tabulate
-unittest2
-sphinx==1.7.9
-sphinx-autobuild
-# nosetests enhancements
-rednose
-nose-timer==0.7.5
-# splitting tests run on a separate CI machines
-nose-parallel==0.3.1
-# Required by st2client tests
-pyyaml==5.4
-RandomWords
-gunicorn==19.9.0
-psutil==5.6.6
-webtest==2.0.25
-rstcheck>=3.3.1,<3.4
-tox==3.14.1
-pyrabbit
-# Since StackStorm v2.8.0 we now use cryptography instead of keyczar, but we still have some tests
-# which utilize keyczar and ensure new cryptography code is fully compatible with keyczar code
-# (those tests only run under Python 2.7 since keyczar doesn't support Python 3.x).
-# See https://github.com/StackStorm/st2/pull/4165
-python-keyczar
-pip-tools  # For pip-compile, to check for version conflicts
diff --git a/test-requirements.txt b/test-requirements.txt
index 1ea72295cc..f137b4d1e1 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,15 +2,15 @@
 coverage==4.5.2
 pep8==1.7.1
 st2flake8==0.1.0
-astroid==2.4.2
-pylint==2.6.0
+astroid==2.5.2
+pylint==2.7.4
 pylint-plugin-utils>=0.4
 black==20.8b1
 pre-commit==2.1.0
-bandit==1.5.1
+bandit==1.7.0
 ipython<6.0.0
 isort>=4.2.5
-mock==3.0.5
+mock==3.0.3
 nose>=1.3.7
 tabulate
 unittest2
@@ -18,17 +18,17 @@ sphinx==1.7.9
 sphinx-autobuild
 # nosetests enhancements
 rednose
-nose-timer==0.7.5
+nose-timer==1.0.1
 # splitting tests run on a separate CI machines
-nose-parallel==0.3.1
+nose-parallel==0.4.0
 # Required by st2client tests
 pyyaml==5.4
 RandomWords
 gunicorn==19.9.0
 psutil==5.6.6
-webtest==2.0.25
+webtest==2.0.35
 rstcheck>=3.3.1,<3.4
-tox==3.14.1
+tox==3.23.0
 pyrabbit
 # pip-tools provides pip-compile: to check for version conflicts
 # pip-tools 5.3 needs pip<20.3
@@ -38,6 +38,6 @@ pip-tools>=5.4,<6.1
 pytest==5.4.3
 pytest-benchmark==3.2.3
 # zstandard is used for micro benchmarks
-zstandard==0.15.1
+zstandard==0.15.2
 # ujson is used for micro benchmarks
 ujson==1.35