diff --git a/bootstrapping-lambda/package.json b/bootstrapping-lambda/package.json
index 96cb2f81..155178e9 100644
--- a/bootstrapping-lambda/package.json
+++ b/bootstrapping-lambda/package.json
@@ -28,7 +28,7 @@
     "@codegenie/serverless-express": "^4.16.0",
     "@guardian/pan-domain-node": "^0.4.2",
     "cors": "^2.8.5",
-    "express": "4.18.2",
+    "express": "4.21.1",
     "jose": "^4.3.7"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 85945181..91138d58 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7888,23 +7888,23 @@ __metadata:
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-"body-parser@npm:1.20.1":
-  version: 1.20.1
-  resolution: "body-parser@npm:1.20.1"
+"body-parser@npm:1.20.3":
+  version: 1.20.3
+  resolution: "body-parser@npm:1.20.3"
   dependencies:
     bytes: "npm:3.1.2"
-    content-type: "npm:~1.0.4"
+    content-type: "npm:~1.0.5"
     debug: "npm:2.6.9"
     depd: "npm:2.0.0"
     destroy: "npm:1.2.0"
     http-errors: "npm:2.0.0"
     iconv-lite: "npm:0.4.24"
     on-finished: "npm:2.4.1"
-    qs: "npm:6.11.0"
-    raw-body: "npm:2.5.1"
+    qs: "npm:6.13.0"
+    raw-body: "npm:2.5.2"
     type-is: "npm:~1.6.18"
     unpipe: "npm:1.0.0"
-  checksum: 10c0/a202d493e2c10a33fb7413dac7d2f713be579c4b88343cd814b6df7a38e5af1901fc31044e04de176db56b16d9772aa25a7723f64478c20f4d91b1ac223bf3b8
+  checksum: 10c0/0a9a93b7518f222885498dcecaad528cf010dd109b071bf471c93def4bfe30958b83e03496eb9c1ad4896db543d999bb62be1a3087294162a88cfa1b42c16310
   languageName: node
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@@ -7943,7 +7943,7 @@ __metadata:
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     "@types/jest": "npm:^29.2.3"
     cors: "npm:^2.8.5"
-    express: "npm:4.18.2"
+    express: "npm:4.21.1"
     jest: "npm:^29.3.1"
     jose: "npm:^4.3.7"
     ts-jest: "npm:^29.0.3"
@@ -8845,10 +8845,10 @@ __metadata:
   languageName: node
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-"content-type@npm:~1.0.4":
-  version: 1.0.4
-  resolution: "content-type@npm:1.0.4"
-  checksum: 10c0/19e08f406f9ae3f80fb4607c75fbde1f22546647877e8047c9fa0b1c61e38f3ede853f51e915c95fd499c2e1c7478cb23c35cfb804d0e8e0495e8db88cfaed75
+"content-type@npm:~1.0.4, content-type@npm:~1.0.5":
+  version: 1.0.5
+  resolution: "content-type@npm:1.0.5"
+  checksum: 10c0/b76ebed15c000aee4678c3707e0860cb6abd4e680a598c0a26e17f0bfae723ec9cc2802f0ff1bc6e4d80603719010431d2231018373d4dde10f9ccff9dadf5af
   languageName: node
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@@ -8873,10 +8873,10 @@ __metadata:
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-"cookie@npm:0.5.0":
-  version: 0.5.0
-  resolution: "cookie@npm:0.5.0"
-  checksum: 10c0/c01ca3ef8d7b8187bae434434582288681273b5a9ed27521d4d7f9f7928fe0c920df0decd9f9d3bbd2d14ac432b8c8cf42b98b3bdd5bfe0e6edddeebebe8b61d
+"cookie@npm:0.7.1":
+  version: 0.7.1
+  resolution: "cookie@npm:0.7.1"
+  checksum: 10c0/5de60c67a410e7c8dc8a46a4b72eb0fe925871d057c9a5d2c0e8145c4270a4f81076de83410c4d397179744b478e33cd80ccbcc457abf40a9409ad27dcd21dde
   languageName: node
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@@ -9746,6 +9746,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"encodeurl@npm:~2.0.0":
+  version: 2.0.0
+  resolution: "encodeurl@npm:2.0.0"
+  checksum: 10c0/5d317306acb13e6590e28e27924c754163946a2480de11865c991a3a7eed4315cd3fba378b543ca145829569eefe9b899f3d84bb09870f675ae60bc924b01ceb
+  languageName: node
+  linkType: hard
+
 "encoding@npm:^0.1.13":
   version: 0.1.13
   resolution: "encoding@npm:0.1.13"
@@ -10550,42 +10557,42 @@ __metadata:
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-"express@npm:4.18.2, express@npm:^4.17.1":
-  version: 4.18.2
-  resolution: "express@npm:4.18.2"
+"express@npm:4.21.1, express@npm:^4.17.1":
+  version: 4.21.1
+  resolution: "express@npm:4.21.1"
   dependencies:
     accepts: "npm:~1.3.8"
     array-flatten: "npm:1.1.1"
-    body-parser: "npm:1.20.1"
+    body-parser: "npm:1.20.3"
     content-disposition: "npm:0.5.4"
     content-type: "npm:~1.0.4"
-    cookie: "npm:0.5.0"
+    cookie: "npm:0.7.1"
     cookie-signature: "npm:1.0.6"
     debug: "npm:2.6.9"
     depd: "npm:2.0.0"
-    encodeurl: "npm:~1.0.2"
+    encodeurl: "npm:~2.0.0"
     escape-html: "npm:~1.0.3"
     etag: "npm:~1.8.1"
-    finalhandler: "npm:1.2.0"
+    finalhandler: "npm:1.3.1"
     fresh: "npm:0.5.2"
     http-errors: "npm:2.0.0"
-    merge-descriptors: "npm:1.0.1"
+    merge-descriptors: "npm:1.0.3"
     methods: "npm:~1.1.2"
     on-finished: "npm:2.4.1"
     parseurl: "npm:~1.3.3"
-    path-to-regexp: "npm:0.1.7"
+    path-to-regexp: "npm:0.1.10"
     proxy-addr: "npm:~2.0.7"
-    qs: "npm:6.11.0"
+    qs: "npm:6.13.0"
     range-parser: "npm:~1.2.1"
     safe-buffer: "npm:5.2.1"
-    send: "npm:0.18.0"
-    serve-static: "npm:1.15.0"
+    send: "npm:0.19.0"
+    serve-static: "npm:1.16.2"
     setprototypeof: "npm:1.2.0"
     statuses: "npm:2.0.1"
     type-is: "npm:~1.6.18"
     utils-merge: "npm:1.0.1"
     vary: "npm:~1.1.2"
-  checksum: 10c0/75af556306b9241bc1d7bdd40c9744b516c38ce50ae3210658efcbf96e3aed4ab83b3432f06215eae5610c123bc4136957dc06e50dfc50b7d4d775af56c4c59c
+  checksum: 10c0/0c287867e5f6129d3def1edd9b63103a53c40d4dc8628839d4b6827e35eb8f0de5a4656f9d85f4457eba584f9871ebb2ad26c750b36bd75d9bbb8bcebdc4892c
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-"finalhandler@npm:1.2.0":
-  version: 1.2.0
-  resolution: "finalhandler@npm:1.2.0"
+"finalhandler@npm:1.3.1":
+  version: 1.3.1
+  resolution: "finalhandler@npm:1.3.1"
   dependencies:
     debug: "npm:2.6.9"
-    encodeurl: "npm:~1.0.2"
+    encodeurl: "npm:~2.0.0"
     escape-html: "npm:~1.0.3"
     on-finished: "npm:2.4.1"
     parseurl: "npm:~1.3.3"
     statuses: "npm:2.0.1"
     unpipe: "npm:~1.0.0"
-  checksum: 10c0/64b7e5ff2ad1fcb14931cd012651631b721ce657da24aedb5650ddde9378bf8e95daa451da43398123f5de161a81e79ff5affe4f9f2a6d2df4a813d6d3e254b7
+  checksum: 10c0/d38035831865a49b5610206a3a9a9aae4e8523cbbcd01175d0480ffbf1278c47f11d89be3ca7f617ae6d94f29cf797546a4619cd84dd109009ef33f12f69019f
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@@ -14381,10 +14388,10 @@ __metadata:
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-"merge-descriptors@npm:1.0.1":
-  version: 1.0.1
-  resolution: "merge-descriptors@npm:1.0.1"
-  checksum: 10c0/b67d07bd44cfc45cebdec349bb6e1f7b077ee2fd5beb15d1f7af073849208cb6f144fe403e29a36571baf3f4e86469ac39acf13c318381e958e186b2766f54ec
+"merge-descriptors@npm:1.0.3":
+  version: 1.0.3
+  resolution: "merge-descriptors@npm:1.0.3"
+  checksum: 10c0/866b7094afd9293b5ea5dcd82d71f80e51514bed33b4c4e9f516795dc366612a4cbb4dc94356e943a8a6914889a914530badff27f397191b9b75cda20b6bae93
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@@ -15482,10 +15489,10 @@ __metadata:
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-"path-to-regexp@npm:0.1.7":
-  version: 0.1.7
-  resolution: "path-to-regexp@npm:0.1.7"
-  checksum: 10c0/50a1ddb1af41a9e68bd67ca8e331a705899d16fb720a1ea3a41e310480948387daf603abb14d7b0826c58f10146d49050a1291ba6a82b78a382d1c02c0b8f905
+"path-to-regexp@npm:0.1.10":
+  version: 0.1.10
+  resolution: "path-to-regexp@npm:0.1.10"
+  checksum: 10c0/34196775b9113ca6df88e94c8d83ba82c0e1a2063dd33bfe2803a980da8d49b91db8104f49d5191b44ea780d46b8670ce2b7f4a5e349b0c48c6779b653f1afe4
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@@ -15848,12 +15855,12 @@ __metadata:
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-"qs@npm:6.11.0, qs@npm:^6.7.0":
-  version: 6.11.0
-  resolution: "qs@npm:6.11.0"
+"qs@npm:6.13.0, qs@npm:^6.7.0":
+  version: 6.13.0
+  resolution: "qs@npm:6.13.0"
   dependencies:
-    side-channel: "npm:^1.0.4"
-  checksum: 10c0/4e4875e4d7c7c31c233d07a448e7e4650f456178b9dd3766b7cfa13158fdb24ecb8c4f059fa91e820dc6ab9f2d243721d071c9c0378892dcdad86e9e9a27c68f
+    side-channel: "npm:^1.0.6"
+  checksum: 10c0/62372cdeec24dc83a9fb240b7533c0fdcf0c5f7e0b83343edd7310f0ab4c8205a5e7c56406531f2e47e1b4878a3821d652be4192c841de5b032ca83619d8f860
   languageName: node
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@@ -15894,15 +15901,15 @@ __metadata:
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-"raw-body@npm:2.5.1":
-  version: 2.5.1
-  resolution: "raw-body@npm:2.5.1"
+"raw-body@npm:2.5.2":
+  version: 2.5.2
+  resolution: "raw-body@npm:2.5.2"
   dependencies:
     bytes: "npm:3.1.2"
     http-errors: "npm:2.0.0"
     iconv-lite: "npm:0.4.24"
     unpipe: "npm:1.0.0"
-  checksum: 10c0/5dad5a3a64a023b894ad7ab4e5c7c1ce34d3497fc7138d02f8c88a3781e68d8a55aa7d4fd3a458616fa8647cc228be314a1c03fb430a07521de78b32c4dd09d2
+  checksum: 10c0/b201c4b66049369a60e766318caff5cb3cc5a900efd89bdac431463822d976ad0670912c931fdbdcf5543207daf6f6833bca57aa116e1661d2ea91e12ca692c4
   languageName: node
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@@ -16741,9 +16748,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"send@npm:0.18.0":
-  version: 0.18.0
-  resolution: "send@npm:0.18.0"
+"send@npm:0.19.0":
+  version: 0.19.0
+  resolution: "send@npm:0.19.0"
   dependencies:
     debug: "npm:2.6.9"
     depd: "npm:2.0.0"
@@ -16758,7 +16765,7 @@ __metadata:
     on-finished: "npm:2.4.1"
     range-parser: "npm:~1.2.1"
     statuses: "npm:2.0.1"
-  checksum: 10c0/0eb134d6a51fc13bbcb976a1f4214ea1e33f242fae046efc311e80aff66c7a43603e26a79d9d06670283a13000e51be6e0a2cb80ff0942eaf9f1cd30b7ae736a
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@@ -16797,15 +16804,15 @@ __metadata:
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-"serve-static@npm:1.15.0":
-  version: 1.15.0
-  resolution: "serve-static@npm:1.15.0"
+"serve-static@npm:1.16.2":
+  version: 1.16.2
+  resolution: "serve-static@npm:1.16.2"
   dependencies:
-    encodeurl: "npm:~1.0.2"
+    encodeurl: "npm:~2.0.0"
     escape-html: "npm:~1.0.3"
     parseurl: "npm:~1.3.3"
-    send: "npm:0.18.0"
-  checksum: 10c0/fa9f0e21a540a28f301258dfe1e57bb4f81cd460d28f0e973860477dd4acef946a1f41748b5bd41c73b621bea2029569c935faa38578fd34cd42a9b4947088ba
+    send: "npm:0.19.0"
+  checksum: 10c0/528fff6f5e12d0c5a391229ad893910709bc51b5705962b09404a1d813857578149b8815f35d3ee5752f44cd378d0f31669d4b1d7e2d11f41e08283d5134bd1f
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-"side-channel@npm:^1.0.3, side-channel@npm:^1.0.4":
+"side-channel@npm:^1.0.3, side-channel@npm:^1.0.4, side-channel@npm:^1.0.6":
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   resolution: "side-channel@npm:1.0.6"
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