diff --git a/Pipfile.lock b/Pipfile.lock
index 1b41ba6f2..923085d75 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -40,18 +40,18 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:539cc1d13202e33ca466e88b2807e29f4c13049d6d87031a3c110744495cb082",
-                "sha256:92d6037539857d8206b8f6ae472e8b77db8058fec5937a1ef3f54304089edbb9"
+                "sha256:9b469f3a900bf28dc19b8cfbf8019bf47f7fdd1a65a1d4ffb98fc14166beb4d1",
+                "sha256:e036ab49d5b79556f99cfc2d9320b34cfbe5be05c5871b51de9329f0603b0474"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==2023.7.22"
+            "version": "==2023.11.17"
         },
         "cfl-common": {
             "hashes": [
-                "sha256:09fe5bb52f3e17e6a35595f8ee77085616869045833bd27a771e007070586477",
-                "sha256:cab6412b30cd31385bb6344f1006d39c311190941ac8372d2bc6e432ab54916f"
+                "sha256:b97a19f1aab073c9dc447249a6501b433ac3cea81052b5a2afe232ceb398ccb9",
+                "sha256:e45b4772b4a7234321cfe8c6ddbf185b4756970782f384f052a6b5298f4ed991"
             ],
-            "version": "==6.37.4"
+            "version": "==6.39.6"
         },
         "charset-normalizer": {
             "hashes": [
@@ -175,11 +175,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:82968f3640e29ef4a773af2c28448f5f7a08d001c6ac05b32d02aeee6509508b",
-                "sha256:d48608d5f62f2c1e260986835db089fa3b79d6f58510881d316b8d88345ae6e1"
+                "sha256:83b6d66b06e484807d778263fdc7f9186d4dc1862fcfa6507830446ac6b060ba",
+                "sha256:c5e7b668025a6e06cad9ba6d4de1fd1a21212acebb51ea34abb400c6e4d33430"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==3.2.23"
+            "version": "==3.2.22"
         },
         "django-countries": {
             "hashes": [
@@ -205,11 +205,11 @@
         },
         "django-import-export": {
             "hashes": [
-                "sha256:88ecaf06be06bd95d97cf34f3c911c56c012a7a81712a8956740e5bfc2465162",
-                "sha256:d02e31908c965d512cc6f7ef6e72935177647b15d3846050d0f094177fca0d86"
+                "sha256:2c1b16e1cf2ea5f62a165d8867e7c6dcff25673ab7201fd18aaf67c9ee90367e",
+                "sha256:78973202e93897326ab0411d64eaf89b72779fcb21ee9e5f64f3fb96571a5978"
             ],
             "index": "pypi",
-            "version": "==3.3.1"
+            "version": "==3.3.3"
         },
         "django-js-reverse": {
             "hashes": [
@@ -220,11 +220,11 @@
         },
         "django-otp": {
             "hashes": [
-                "sha256:5ddd1aaf455db47fac3ce0d8b518e68e9a57db55e30ad68eafad377e4fa741f5",
-                "sha256:7e805cc196cbac93edbbbbf5078d7c5156fec2dba1b2589361ddbf74c4557e39"
+                "sha256:5277731bc05b6cdbf96aa84ac46018e30ed5fb248086053b0146f925de059060",
+                "sha256:8f4156a3c14ce2aaa31379385eadf388925cd50fc4b5d20a3b944f454c98ff7c"
             ],
             "markers": "python_version >= '3.7'",
-            "version": "==1.2.4"
+            "version": "==1.3.0"
         },
         "django-phonenumber-field": {
             "hashes": [
@@ -441,11 +441,11 @@
         },
         "prompt-toolkit": {
             "hashes": [
-                "sha256:04505ade687dc26dc4284b1ad19a83be2f2afe83e7a828ace0c72f3a1df72aac",
-                "sha256:9dffbe1d8acf91e3de75f3b544e4842382fc06c6babe903ac9acb74dc6e08d88"
+                "sha256:941367d97fc815548822aa26c2a269fdc4eb21e9ec05fc5d447cf09bad5d75f0",
+                "sha256:f36fe301fafb7470e86aaf90f036eef600a3210be4decf461a5b1ca8403d3cb2"
             ],
             "markers": "python_full_version >= '3.7.0'",
-            "version": "==3.0.39"
+            "version": "==3.0.41"
         },
         "ptyprocess": {
             "hashes": [
@@ -463,11 +463,11 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:13fc09fa63bc8d8671a6d247e1eb303c4b343eaee81d861f3404db2935653692",
-                "sha256:1daff0494820c69bc8941e407aa20f577374ee88364ee10a98fdbe0aece96e29"
+                "sha256:1b37f1b1e1bff2af52ecaf28cc601e2ef7077000b227a0675da25aef85784bc4",
+                "sha256:e45a0e74bf9c530f564ca81b8952343be986a29f6afe7f5ad95c5f06b7bdf5e8"
             ],
             "markers": "python_version >= '3.7'",
-            "version": "==2.16.1"
+            "version": "==2.17.1"
         },
         "pyhamcrest": {
             "hashes": [
@@ -646,18 +646,18 @@
         },
         "urllib3": {
             "hashes": [
-                "sha256:c97dfde1f7bd43a71c8d2a58e369e9b2bf692d1334ea9f9cae55add7d0dd0f84",
-                "sha256:fdb6d215c776278489906c2f8916e6e7d4f5a9b602ccbcfdf7f016fc8da0596e"
+                "sha256:55901e917a5896a349ff771be919f8bd99aff50b79fe58fec595eb37bbc56bb3",
+                "sha256:df7aa8afb0148fa78488e7899b2c59b5f4ffcfa82e6c54ccb9dd37c1d7b52d54"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==2.0.7"
+            "markers": "python_version >= '3.8'",
+            "version": "==2.1.0"
         },
         "wcwidth": {
             "hashes": [
-                "sha256:9a929bd8380f6cd9571a968a9c8f4353ca58d7cd812a4822bba831f8d685b223",
-                "sha256:a675d1a4a2d24ef67096a04b85b02deeecd8e226f57b5e3a72dbb9ed99d27da8"
+                "sha256:25eb3ecbec328cdb945f56f2a7cfe784bdf7a73a8197398c7a7c65e7fe93e9ae",
+                "sha256:c4b153acf29f1f0d7fb1b00d097cce82b73de7a2016321c8d7ca71bd76dd848b"
             ],
-            "version": "==0.2.9"
+            "version": "==0.2.11"
         },
         "xlrd": {
             "hashes": [
@@ -677,10 +677,10 @@
     "develop": {
         "aimmo": {
             "hashes": [
-                "sha256:a7cb6ff0405892d41e48023b407c8541f9d2210a8a35d1fc199eadc0e92bc25a",
-                "sha256:e12177cbac79232621e6d88f412e6d5f8289df9a1b391930e20fba8c43f05910"
+                "sha256:1c4e9ea558c083b8f59b365d1f1dfd6d94e8aee863ea96dcaeec488fd72541f8",
+                "sha256:4c8d20c738e4a4443ca98e03621b96c5c79309f4f817faf3aaf731380c621d8a"
             ],
-            "version": "==2.10.8"
+            "version": "==2.10.12"
         },
         "asgiref": {
             "hashes": [
@@ -708,18 +708,18 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:539cc1d13202e33ca466e88b2807e29f4c13049d6d87031a3c110744495cb082",
-                "sha256:92d6037539857d8206b8f6ae472e8b77db8058fec5937a1ef3f54304089edbb9"
+                "sha256:9b469f3a900bf28dc19b8cfbf8019bf47f7fdd1a65a1d4ffb98fc14166beb4d1",
+                "sha256:e036ab49d5b79556f99cfc2d9320b34cfbe5be05c5871b51de9329f0603b0474"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==2023.7.22"
+            "version": "==2023.11.17"
         },
         "cfl-common": {
             "hashes": [
-                "sha256:09fe5bb52f3e17e6a35595f8ee77085616869045833bd27a771e007070586477",
-                "sha256:cab6412b30cd31385bb6344f1006d39c311190941ac8372d2bc6e432ab54916f"
+                "sha256:b97a19f1aab073c9dc447249a6501b433ac3cea81052b5a2afe232ceb398ccb9",
+                "sha256:e45b4772b4a7234321cfe8c6ddbf185b4756970782f384f052a6b5298f4ed991"
             ],
-            "version": "==6.37.4"
+            "version": "==6.39.6"
         },
         "charset-normalizer": {
             "hashes": [
@@ -819,11 +819,11 @@
         },
         "codeforlife-portal": {
             "hashes": [
-                "sha256:cb393cf7f8b6f552afeaa6926fac55399a57cb80febed9bfcc923b6d41f2c166",
-                "sha256:ded940d91a13a0971a146b98dde1d49d5df711dfac30674d5e0391bc26b2efa3"
+                "sha256:4c57475a3ee6ef66ffec3bdee6637659d5d6ccd7c59c7735842d43242b057e61",
+                "sha256:f1299b83ffb963a3abe4770fcd45e8b7d01fd6ac318d4e0c3d315164a530e5ae"
             ],
             "index": "pypi",
-            "version": "==6.37.3"
+            "version": "==6.39.5"
         },
         "defusedxml": {
             "hashes": [
@@ -843,11 +843,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:82968f3640e29ef4a773af2c28448f5f7a08d001c6ac05b32d02aeee6509508b",
-                "sha256:d48608d5f62f2c1e260986835db089fa3b79d6f58510881d316b8d88345ae6e1"
+                "sha256:83b6d66b06e484807d778263fdc7f9186d4dc1862fcfa6507830446ac6b060ba",
+                "sha256:c5e7b668025a6e06cad9ba6d4de1fd1a21212acebb51ea34abb400c6e4d33430"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==3.2.23"
+            "version": "==3.2.22"
         },
         "django-classy-tags": {
             "hashes": [
@@ -880,11 +880,11 @@
         },
         "django-import-export": {
             "hashes": [
-                "sha256:88ecaf06be06bd95d97cf34f3c911c56c012a7a81712a8956740e5bfc2465162",
-                "sha256:d02e31908c965d512cc6f7ef6e72935177647b15d3846050d0f094177fca0d86"
+                "sha256:2c1b16e1cf2ea5f62a165d8867e7c6dcff25673ab7201fd18aaf67c9ee90367e",
+                "sha256:78973202e93897326ab0411d64eaf89b72779fcb21ee9e5f64f3fb96571a5978"
             ],
             "index": "pypi",
-            "version": "==3.3.1"
+            "version": "==3.3.3"
         },
         "django-js-reverse": {
             "hashes": [
@@ -895,11 +895,11 @@
         },
         "django-otp": {
             "hashes": [
-                "sha256:5ddd1aaf455db47fac3ce0d8b518e68e9a57db55e30ad68eafad377e4fa741f5",
-                "sha256:7e805cc196cbac93edbbbbf5078d7c5156fec2dba1b2589361ddbf74c4557e39"
+                "sha256:5277731bc05b6cdbf96aa84ac46018e30ed5fb248086053b0146f925de059060",
+                "sha256:8f4156a3c14ce2aaa31379385eadf388925cd50fc4b5d20a3b944f454c98ff7c"
             ],
             "markers": "python_version >= '3.7'",
-            "version": "==1.2.4"
+            "version": "==1.3.0"
         },
         "django-phonenumber-field": {
             "hashes": [
@@ -1005,11 +1005,11 @@
         },
         "exceptiongroup": {
             "hashes": [
-                "sha256:097acd85d473d75af5bb98e41b61ff7fe35efe6675e4f9370ec6ec5126d160e9",
-                "sha256:343280667a4585d195ca1cf9cef84a4e178c4b6cf2274caef9859782b567d5e3"
+                "sha256:4bfd3996ac73b41e9b9628b04e079f193850720ea5945fc96a08633c66912f14",
+                "sha256:91f5c769735f051a4290d52edd0858999b57e5876e9f85937691bd4c9fa3ed68"
             ],
             "markers": "python_version < '3.11'",
-            "version": "==1.1.3"
+            "version": "==1.2.0"
         },
         "execnet": {
             "hashes": [
@@ -1351,11 +1351,11 @@
         },
         "pyasn1": {
             "hashes": [
-                "sha256:87a2121042a1ac9358cabcaf1d07680ff97ee6404333bacca15f76aa8ad01a57",
-                "sha256:97b7290ca68e62a832558ec3976f15cbf911bf5d7c7039d8b861c2a0ece69fde"
+                "sha256:4439847c58d40b1d0a573d07e3856e95333f1976294494c325775aeca506eb58",
+                "sha256:6d391a96e59b23130a5cfa74d6fd7f388dbbe26cc8f1edf39fdddf08d9d6676c"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
-            "version": "==0.5.0"
+            "version": "==0.5.1"
         },
         "pyasn1-modules": {
             "hashes": [
@@ -1414,19 +1414,19 @@
         },
         "pytest-order": {
             "hashes": [
-                "sha256:139d25b30826b78eebb42722f747eab14c44b88059d7a71d4f79d14a057269a5",
-                "sha256:3b3730969c97900fa5cd31ecff80847680ed56b2490954565c14949ba60d9371"
+                "sha256:944f86b6d441aa7b1da80f801c6ab65b84bbeba472d0a7a12eb43ba26650101a",
+                "sha256:9d65c3b6dc6d6ee984d6ae2c6c4aa4f1331e5b915116219075c888c8bcbb93b8"
             ],
             "index": "pypi",
-            "version": "==1.1.0"
+            "version": "==1.2.0"
         },
         "pytest-xdist": {
             "hashes": [
-                "sha256:d5ee0520eb1b7bcca50a60a518ab7a7707992812c578198f8b44fdfac78e8c93",
-                "sha256:ff9daa7793569e6a68544850fd3927cd257cc03a7ef76c95e86915355e82b5f2"
+                "sha256:cbb36f3d67e0c478baa57fa4edc8843887e0f6cfc42d677530a36d7472b32d8a",
+                "sha256:d075629c7e00b611df89f490a5063944bee7a4362a5ff11c7cc7824a03dfce24"
             ],
             "index": "pypi",
-            "version": "==3.3.1"
+            "version": "==3.5.0"
         },
         "python-dateutil": {
             "hashes": [
@@ -1657,11 +1657,11 @@
         },
         "trio": {
             "hashes": [
-                "sha256:3887cf18c8bcc894433420305468388dac76932e9668afa1c49aa3806b6accb3",
-                "sha256:f43da357620e5872b3d940a2e3589aa251fd3f881b65a608d742e00809b1ec38"
+                "sha256:16f89f7dcc8f7b9dcdec1fcd863e0c039af6d0f9a22f8dfd56f75d75ec73fd48",
+                "sha256:bb4abb3f4af23f96679e7c8cdabb8b234520f2498550d2cf63ebfd95f2ce27fe"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==0.22.2"
+            "markers": "python_version >= '3.8'",
+            "version": "==0.23.1"
         },
         "trio-websocket": {
             "hashes": [
@@ -1689,11 +1689,11 @@
         },
         "urllib3": {
             "hashes": [
-                "sha256:c97dfde1f7bd43a71c8d2a58e369e9b2bf692d1334ea9f9cae55add7d0dd0f84",
-                "sha256:fdb6d215c776278489906c2f8916e6e7d4f5a9b602ccbcfdf7f016fc8da0596e"
+                "sha256:55901e917a5896a349ff771be919f8bd99aff50b79fe58fec595eb37bbc56bb3",
+                "sha256:df7aa8afb0148fa78488e7899b2c59b5f4ffcfa82e6c54ccb9dd37c1d7b52d54"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==2.0.7"
+            "markers": "python_version >= '3.8'",
+            "version": "==2.1.0"
         },
         "websocket-client": {
             "hashes": [
diff --git a/game/tests/test_level_moderation.py b/game/tests/test_level_moderation.py
index 85781d7d4..55cdb15f1 100644
--- a/game/tests/test_level_moderation.py
+++ b/game/tests/test_level_moderation.py
@@ -109,7 +109,7 @@ def test_moderation_admin(self):
         email1, password1 = signup_teacher_directly()
         email2, password2 = signup_teacher_directly()
         school = create_organisation_directly(email1)
-        join_teacher_to_organisation(email2, school.name, school.postcode)
+        join_teacher_to_organisation(email2, school.name)
 
         # Create one class and student for each teacher
         _, class_name1, access_code1 = create_class_directly(email1)
diff --git a/game/tests/utils/teacher.py b/game/tests/utils/teacher.py
index 6164cc9e5..ce816bdcb 100644
--- a/game/tests/utils/teacher.py
+++ b/game/tests/utils/teacher.py
@@ -7,7 +7,6 @@
 def create_school() -> School:
     school = School()
     school.name = "".join(random.choice(string.ascii_uppercase) for _ in range(10))
-    school.postcode = "".join(random.choice(string.ascii_uppercase) for _ in range(7))
     school.country = "United Kingdom"
     school.save()
 
diff --git a/setup.py b/setup.py
index 39d390841..de8c43176 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
     packages=find_packages(),
     include_package_data=True,
     install_requires=[
-        "django==3.2.23",
+        "django==3.2.22",
         "django-csp==3.7",
         "django-js-reverse==0.9.1",
         "django-pipeline==2.0.8",