diff --git a/apps/run/src/app/process.ts b/apps/run/src/app/process.ts
index 29431dd0..e3091097 100644
--- a/apps/run/src/app/process.ts
+++ b/apps/run/src/app/process.ts
@@ -1,7 +1,7 @@
 import {
   diffDecodeTrack,
   diffEncodeAirspaces,
-  diffEncodeArray,
+  diffEncodeArray32bit,
   fetchResponse,
   protos,
   SecretKeys,
@@ -37,7 +37,7 @@ export async function postProcessTrack(datastore: Datastore, trackId: number | s
       trackEntity.ground_altitude_group = Buffer.from(
         protos.GroundAltitudeGroup.toBinary({
           groundAltitudes: groundAltitudes.map(({ altitudes, hasErrors }) => ({
-            altitudes: diffEncodeArray(altitudes),
+            altitudes: diffEncodeArray32bit(altitudes),
             hasErrors,
           })),
         }),
diff --git a/package-lock.json b/package-lock.json
index c1d0337a..6ed39a1f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5031,7 +5031,7 @@
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.3.tgz",
       "integrity": "sha512-FaruWX6KdudYloq1AHD/4nU+UsMTdNE8CKyrseXWEcgjDAbvkwJg2QGPAnfIJLIWsjZOSPLOAykK6fuYp4vp4A==",
-      "dev": true,
+      "devOptional": true,
       "dependencies": {
         "tslib": "^2.4.0"
       }
@@ -5318,6 +5318,12 @@
         "@types/express": "*"
       }
     },
+    "node_modules/@types/geojson": {
+      "version": "7946.0.14",
+      "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.14.tgz",
+      "integrity": "sha512-WCfD5Ht3ZesJUsONdhvm84dmzWOiOzOAqOncN0++w0lBw1o8OuDNJF2McvvCef/yBqb/HYRahp1BYtODFQ8bRg==",
+      "peer": true
+    },
     "node_modules/@types/google.maps": {
       "version": "3.55.4",
       "resolved": "https://registry.npmjs.org/@types/google.maps/-/google.maps-3.55.4.tgz",
@@ -12115,6 +12121,41 @@
         "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
       }
     },
+    "node_modules/jest-circus/node_modules/babel-plugin-macros": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-macros/-/babel-plugin-macros-3.1.0.tgz",
+      "integrity": "sha512-Cg7TFGpIr01vOQNODXOOaGz2NpCU5gl8x1qJFbb6hbZxR7XrcE2vtbAsTAbJ7/xwJtUuJEw8K8Zr/AE0LHlesg==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "@babel/runtime": "^7.12.5",
+        "cosmiconfig": "^7.0.0",
+        "resolve": "^1.19.0"
+      },
+      "engines": {
+        "node": ">=10",
+        "npm": ">=6"
+      }
+    },
+    "node_modules/jest-circus/node_modules/cosmiconfig": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-7.1.0.tgz",
+      "integrity": "sha512-AdmX6xUzdNASswsFtmwSt7Vj8po9IuqXm0UXz7QKPuEUmPB4XyjGfaAr2PSuELMwkRMVH1EpIkX5bTZGRB3eCA==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "@types/parse-json": "^4.0.0",
+        "import-fresh": "^3.2.1",
+        "parse-json": "^5.0.0",
+        "path-type": "^4.0.0",
+        "yaml": "^1.10.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/jest-circus/node_modules/dedent": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/dedent/-/dedent-1.5.1.tgz",
@@ -18132,7 +18173,6 @@
       "version": "5.4.2",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.2.tgz",
       "integrity": "sha512-+2/g0Fds1ERlP6JsakQQDXjZdZMM+rqpamFZJEKh4kwTIn3iDkgKtby0CeNd5ATNZ4Ry1ax15TMx0W2V+miizQ==",
-      "dev": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"