diff --git a/lambdas/backend-client/package.json b/lambdas/backend-client/package.json
index be9b2dc2d..1ed66f6dd 100644
--- a/lambdas/backend-client/package.json
+++ b/lambdas/backend-client/package.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "axios": "^1.13.5",
+    "axios": "^1.16.1",
     "axios-retry": "^4.5.0",
     "libphonenumber-js": "^1.12.41",
     "punycode": "^2.3.1",
diff --git a/package-lock.json b/package-lock.json
index 34ab466e2..ad4c0eb69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -189,7 +189,7 @@
       "name": "nhs-notify-backend-client",
       "version": "0.0.1",
       "dependencies": {
-        "axios": "^1.13.5",
+        "axios": "^1.16.1",
         "axios-retry": "^4.5.0",
         "libphonenumber-js": "^1.12.41",
         "punycode": "^2.3.1",
@@ -6084,7 +6084,6 @@
       "version": "2.5.6",
       "resolved": "https://registry.npmjs.org/@parcel/watcher/-/watcher-2.5.6.tgz",
       "integrity": "sha512-tmmZ3lQxAe/k/+rNnXQRawJ4NjxO2hqiOLTHvWchtGZULp4RyFeh6aU4XdOYBFe2KE1oShQTv4AblOs2iOrNnQ==",
-      "dev": true,
       "hasInstallScript": true,
       "license": "MIT",
       "optional": true,
@@ -6124,7 +6123,6 @@
       "cpu": [
         "arm64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6145,7 +6143,6 @@
       "cpu": [
         "arm64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6166,7 +6163,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6187,7 +6183,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6208,7 +6203,6 @@
       "cpu": [
         "arm"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6229,7 +6223,6 @@
       "cpu": [
         "arm"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6250,7 +6243,6 @@
       "cpu": [
         "arm64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6271,7 +6263,6 @@
       "cpu": [
         "arm64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6292,7 +6283,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6313,7 +6303,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6334,7 +6323,6 @@
       "cpu": [
         "arm64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6355,7 +6343,6 @@
       "cpu": [
         "ia32"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6376,7 +6363,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -6394,7 +6380,6 @@
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
       "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "engines": {
@@ -7888,7 +7873,6 @@
       "os": [
         "darwin"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -7906,7 +7890,6 @@
       "os": [
         "darwin"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -7924,7 +7907,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -7942,7 +7924,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -7960,7 +7941,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -7978,7 +7958,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -7996,7 +7975,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -8014,7 +7992,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -8032,7 +8009,6 @@
       "os": [
         "linux"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -8050,7 +8026,6 @@
       "os": [
         "win32"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -8068,7 +8043,6 @@
       "os": [
         "win32"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -8086,7 +8060,6 @@
       "os": [
         "win32"
       ],
-      "peer": true,
       "engines": {
         "node": ">=10"
       }
@@ -8098,18 +8071,6 @@
       "dev": true,
       "license": "Apache-2.0"
     },
-    "node_modules/@swc/helpers": {
-      "version": "0.5.21",
-      "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.21.tgz",
-      "integrity": "sha512-jI/VAmtdjB/RnI8GTnokyX7Ug8c+g+ffD6QRLa6XQewtnGyukKkKSk3wLTM3b5cjt1jNh9x0jfVlagdN2gDKQg==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "tslib": "^2.8.0"
-      }
-    },
     "node_modules/@swc/jest": {
       "version": "0.2.39",
       "resolved": "https://registry.npmjs.org/@swc/jest/-/jest-0.2.39.tgz",
@@ -9320,7 +9281,6 @@
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
       "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "debug": "4"
@@ -9795,13 +9755,14 @@
       }
     },
     "node_modules/axios": {
-      "version": "1.15.1",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-1.15.1.tgz",
-      "integrity": "sha512-WOG+Jj8ZOvR0a3rAn+Tuf1UQJRxw5venr6DgdbJzngJE3qG7X0kL83CZGpdHMxEm+ZK3seAbvFsw4FfOfP9vxg==",
+      "version": "1.16.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.16.1.tgz",
+      "integrity": "sha512-caYkukvroVPO8KrzuJEb50Hm07KwfBZPEC3VeFHTsqWHvKTsy54hjJz9BS/cdaypROE2rH6xvm9mHX4fgWkr3A==",
       "license": "MIT",
       "dependencies": {
-        "follow-redirects": "^1.15.11",
+        "follow-redirects": "^1.16.0",
         "form-data": "^4.0.5",
+        "https-proxy-agent": "^5.0.1",
         "proxy-from-env": "^2.1.0"
       }
     },
@@ -13751,7 +13712,6 @@
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
       "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "agent-base": "6",
@@ -17084,7 +17044,6 @@
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-7.1.1.tgz",
       "integrity": "sha512-5m3bsyrjFWE1xf7nz7YXdN4udnVtXK6/Yfgn5qnahL6bCkf2yKt4k3nuTKAtT4r3IG8JNR2ncsIMdZuAzJjHQQ==",
-      "dev": true,
       "license": "MIT",
       "optional": true
     },
@@ -22186,6 +22145,18 @@
         "nhs-notify-web-template-management-types": "^0.0.1",
         "typescript": "^5.9.3"
       }
+    },
+    "node_modules/@swc/helpers": {
+      "version": "0.5.21",
+      "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.21.tgz",
+      "integrity": "sha512-jI/VAmtdjB/RnI8GTnokyX7Ug8c+g+ffD6QRLa6XQewtnGyukKkKSk3wLTM3b5cjt1jNh9x0jfVlagdN2gDKQg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "tslib": "^2.8.0"
+      }
     }
   }
 }