diff --git a/.evergreen/generated_configs/tasks.yml b/.evergreen/generated_configs/tasks.yml
index c666c6901a..37b7a622d5 100644
--- a/.evergreen/generated_configs/tasks.yml
+++ b/.evergreen/generated_configs/tasks.yml
@@ -227,6 +227,186 @@ tasks:
       - noauth
       - nossl
       - sync_async
+  - name: test-4.2-standalone-auth-ssl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - standalone
+      - auth
+      - ssl
+      - sync
+  - name: test-4.2-standalone-auth-ssl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - standalone
+      - auth
+      - ssl
+      - async
+  - name: test-4.2-standalone-auth-ssl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - standalone
+      - auth
+      - ssl
+      - sync_async
+  - name: test-4.2-standalone-noauth-ssl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - standalone
+      - noauth
+      - ssl
+      - sync
+  - name: test-4.2-standalone-noauth-ssl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - standalone
+      - noauth
+      - ssl
+      - async
+  - name: test-4.2-standalone-noauth-ssl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - standalone
+      - noauth
+      - ssl
+      - sync_async
+  - name: test-4.2-standalone-noauth-nossl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - standalone
+      - noauth
+      - nossl
+      - sync
+  - name: test-4.2-standalone-noauth-nossl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - standalone
+      - noauth
+      - nossl
+      - async
+  - name: test-4.2-standalone-noauth-nossl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: server
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - standalone
+      - noauth
+      - nossl
+      - sync_async
   - name: test-4.4-standalone-auth-ssl-sync
     commands:
       - func: bootstrap mongo-orchestration
@@ -1667,6 +1847,186 @@ tasks:
       - noauth
       - nossl
       - sync_async
+  - name: test-4.2-replica_set-auth-ssl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - replica_set
+      - auth
+      - ssl
+      - sync
+  - name: test-4.2-replica_set-auth-ssl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - replica_set
+      - auth
+      - ssl
+      - async
+  - name: test-4.2-replica_set-auth-ssl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - replica_set
+      - auth
+      - ssl
+      - sync_async
+  - name: test-4.2-replica_set-noauth-ssl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - replica_set
+      - noauth
+      - ssl
+      - sync
+  - name: test-4.2-replica_set-noauth-ssl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - replica_set
+      - noauth
+      - ssl
+      - async
+  - name: test-4.2-replica_set-noauth-ssl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - replica_set
+      - noauth
+      - ssl
+      - sync_async
+  - name: test-4.2-replica_set-noauth-nossl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - replica_set
+      - noauth
+      - nossl
+      - sync
+  - name: test-4.2-replica_set-noauth-nossl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - replica_set
+      - noauth
+      - nossl
+      - async
+  - name: test-4.2-replica_set-noauth-nossl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: replica_set
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - replica_set
+      - noauth
+      - nossl
+      - sync_async
   - name: test-4.4-replica_set-auth-ssl-sync
     commands:
       - func: bootstrap mongo-orchestration
@@ -3107,6 +3467,186 @@ tasks:
       - noauth
       - nossl
       - sync_async
+  - name: test-4.2-sharded_cluster-auth-ssl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - auth
+      - ssl
+      - sync
+  - name: test-4.2-sharded_cluster-auth-ssl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - auth
+      - ssl
+      - async
+  - name: test-4.2-sharded_cluster-auth-ssl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: auth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: auth
+          SSL: ssl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - auth
+      - ssl
+      - sync_async
+  - name: test-4.2-sharded_cluster-noauth-ssl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - noauth
+      - ssl
+      - sync
+  - name: test-4.2-sharded_cluster-noauth-ssl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - noauth
+      - ssl
+      - async
+  - name: test-4.2-sharded_cluster-noauth-ssl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: noauth
+          SSL: ssl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: ssl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - noauth
+      - ssl
+      - sync_async
+  - name: test-4.2-sharded_cluster-noauth-nossl-sync
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: sync
+          TEST_SUITES: default
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - noauth
+      - nossl
+      - sync
+  - name: test-4.2-sharded_cluster-noauth-nossl-async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: async
+          TEST_SUITES: default_async
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - noauth
+      - nossl
+      - async
+  - name: test-4.2-sharded_cluster-noauth-nossl-sync_async
+    commands:
+      - func: bootstrap mongo-orchestration
+        vars:
+          VERSION: "4.2"
+          TOPOLOGY: sharded_cluster
+          AUTH: noauth
+          SSL: nossl
+      - func: run tests
+        vars:
+          AUTH: noauth
+          SSL: nossl
+          SYNC: sync_async
+          TEST_SUITES: ""
+    tags:
+      - "4.2"
+      - sharded_cluster
+      - noauth
+      - nossl
+      - sync_async
   - name: test-4.4-sharded_cluster-auth-ssl-sync
     commands:
       - func: bootstrap mongo-orchestration
diff --git a/.evergreen/generated_configs/variants.yml b/.evergreen/generated_configs/variants.yml
index 79c9b22c93..8f5d833e90 100644
--- a/.evergreen/generated_configs/variants.yml
+++ b/.evergreen/generated_configs/variants.yml
@@ -817,10 +817,10 @@ buildvariants:
       PYTHON_BINARY: /opt/python/3.13/bin/python3
 
   # Ocsp tests
-  - name: ocsp-rhel8-v4.4-python3.9
+  - name: ocsp-rhel8-v4.2-python3.9
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 v4.4 Python3.9
+    display_name: OCSP RHEL8 v4.2 Python3.9
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -828,12 +828,12 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: "4.4"
+      VERSION: "4.2"
       PYTHON_BINARY: /opt/python/3.9/bin/python3
-  - name: ocsp-rhel8-v5.0-python3.10
+  - name: ocsp-rhel8-v4.4-python3.10
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 v5.0 Python3.10
+    display_name: OCSP RHEL8 v4.4 Python3.10
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -841,12 +841,12 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: "5.0"
+      VERSION: "4.4"
       PYTHON_BINARY: /opt/python/3.10/bin/python3
-  - name: ocsp-rhel8-v6.0-python3.11
+  - name: ocsp-rhel8-v5.0-python3.11
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 v6.0 Python3.11
+    display_name: OCSP RHEL8 v5.0 Python3.11
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -854,12 +854,12 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: "6.0"
+      VERSION: "5.0"
       PYTHON_BINARY: /opt/python/3.11/bin/python3
-  - name: ocsp-rhel8-v7.0-python3.12
+  - name: ocsp-rhel8-v6.0-python3.12
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 v7.0 Python3.12
+    display_name: OCSP RHEL8 v6.0 Python3.12
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -867,12 +867,12 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: "7.0"
+      VERSION: "6.0"
       PYTHON_BINARY: /opt/python/3.12/bin/python3
-  - name: ocsp-rhel8-v8.0-python3.13
+  - name: ocsp-rhel8-v7.0-python3.13
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 v8.0 Python3.13
+    display_name: OCSP RHEL8 v7.0 Python3.13
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -880,12 +880,12 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: "8.0"
+      VERSION: "7.0"
       PYTHON_BINARY: /opt/python/3.13/bin/python3
-  - name: ocsp-rhel8-rapid-pypy3.10
+  - name: ocsp-rhel8-v8.0-pypy3.10
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 rapid PyPy3.10
+    display_name: OCSP RHEL8 v8.0 PyPy3.10
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -893,12 +893,12 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: rapid
+      VERSION: "8.0"
       PYTHON_BINARY: /opt/python/pypy3.10/bin/python3
-  - name: ocsp-rhel8-latest-python3.9
+  - name: ocsp-rhel8-rapid-python3.9
     tasks:
       - name: .ocsp
-    display_name: OCSP RHEL8 latest Python3.9
+    display_name: OCSP RHEL8 rapid Python3.9
     run_on:
       - rhel87-small
     batchtime: 20160
@@ -906,8 +906,21 @@ buildvariants:
       AUTH: noauth
       SSL: ssl
       TOPOLOGY: server
-      VERSION: latest
+      VERSION: rapid
       PYTHON_BINARY: /opt/python/3.9/bin/python3
+  - name: ocsp-rhel8-latest-python3.10
+    tasks:
+      - name: .ocsp
+    display_name: OCSP RHEL8 latest Python3.10
+    run_on:
+      - rhel87-small
+    batchtime: 20160
+    expansions:
+      AUTH: noauth
+      SSL: ssl
+      TOPOLOGY: server
+      VERSION: latest
+      PYTHON_BINARY: /opt/python/3.10/bin/python3
   - name: ocsp-win64-v4.4-python3.9
     tasks:
       - name: .ocsp-rsa !.ocsp-staple
@@ -1338,6 +1351,7 @@ buildvariants:
   - name: storage-inmemory-rhel8-python3.9
     tasks:
       - name: .standalone .noauth .nossl .4.0 .sync_async
+      - name: .standalone .noauth .nossl .4.2 .sync_async
       - name: .standalone .noauth .nossl .4.4 .sync_async
       - name: .standalone .noauth .nossl .5.0 .sync_async
       - name: .standalone .noauth .nossl .6.0 .sync_async
diff --git a/.evergreen/scripts/generate_config.py b/.evergreen/scripts/generate_config.py
index e9624ab109..41b1266a70 100644
--- a/.evergreen/scripts/generate_config.py
+++ b/.evergreen/scripts/generate_config.py
@@ -26,7 +26,7 @@
 # Globals
 ##############
 
-ALL_VERSIONS = ["4.0", "4.4", "5.0", "6.0", "7.0", "8.0", "rapid", "latest"]
+ALL_VERSIONS = ["4.0", "4.2", "4.4", "5.0", "6.0", "7.0", "8.0", "rapid", "latest"]
 CPYTHONS = ["3.9", "3.10", "3.11", "3.12", "3.13"]
 PYPYS = ["pypy3.10"]
 ALL_PYTHONS = CPYTHONS + PYPYS
diff --git a/uv.lock b/uv.lock
index e7f09f66fc..a2e951e76c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -997,7 +997,7 @@ sdist = { url = "https://files.pythonhosted.org/packages/07/e9/ae44ea7d7605df9e5
 
 [[package]]
 name = "pymongo"
-version = "4.11.0.dev0"
+version = "4.12.0.dev0"
 source = { editable = "." }
 dependencies = [
     { name = "dnspython" },