diff --git a/package-lock.json b/package-lock.json
index 85082b6..6d25955 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "CC-BY-NC-ND-4.0",
       "dependencies": {
         "body-parser": "^1.17.2",
-        "ejs": "^2.5.5",
+        "ejs": "^3.1.10",
         "express": "^4.14.1",
         "express-session": "^1.15.6",
         "flat": "^2.0.1",
@@ -1463,6 +1463,12 @@
         "node": "*"
       }
     },
+    "node_modules/async": {
+      "version": "3.2.6",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.6.tgz",
+      "integrity": "sha512-htCUDlxyyCLMgaM3xXg0C0LW2xqfuQ6p05pCEIsXuyQ+a1koYKTuBMzRNwmybfLgvJDMd0r1LTn4+E0Ti6C2AA==",
+      "license": "MIT"
+    },
     "node_modules/async-function": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/async-function/-/async-function-1.0.0.tgz",
@@ -1500,7 +1506,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/baseline-browser-mapping": {
@@ -2396,11 +2401,16 @@
       "license": "MIT"
     },
     "node_modules/ejs": {
-      "version": "2.7.4",
-      "resolved": "https://registry.npmjs.org/ejs/-/ejs-2.7.4.tgz",
-      "integrity": "sha512-7vmuyh5+kuUyJKePhQfRQBhXV5Ce+RnaeeQArKu1EAMpL3WbgMt5WG6uQZpEVvYSSsxMXRKOewtDk9RaTKXRlA==",
-      "hasInstallScript": true,
+      "version": "3.1.10",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.10.tgz",
+      "integrity": "sha512-UeJmFfOrAQS8OJWPZ4qtgHyWExa088/MtK5UEyoJGFH67cDEXkZSviOiKRCZ4Xij0zxI3JECgYs3oKx+AizQBA==",
       "license": "Apache-2.0",
+      "dependencies": {
+        "jake": "^10.8.5"
+      },
+      "bin": {
+        "ejs": "bin/cli.js"
+      },
       "engines": {
         "node": ">=0.10.0"
       }
@@ -3558,6 +3568,36 @@
         "node": "^10.12.0 || >=12.0.0"
       }
     },
+    "node_modules/filelist": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/filelist/-/filelist-1.0.6.tgz",
+      "integrity": "sha512-5giy2PkLYY1cP39p17Ech+2xlpTRL9HLspOfEgm0L6CwBXBTgsK5ou0JtzYuepxkaQ/tvhCFIJ5uXo0OrM2DxA==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "minimatch": "^5.0.1"
+      }
+    },
+    "node_modules/filelist/node_modules/brace-expansion": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.1.0.tgz",
+      "integrity": "sha512-TN1kCZAgdgweJhWWpgKYrQaMNHcDULHkWwQIspdtjV4Y5aurRdZpjAqn6yX3FPqTA9ngHCc4hJxMAMgGfve85w==",
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/filelist/node_modules/minimatch": {
+      "version": "5.1.9",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.9.tgz",
+      "integrity": "sha512-7o1wEA2RyMP7Iu7GNba9vc0RWWGACJOCZBJX2GJWip0ikV+wcOsgVuY9uE8CPiyQhkGFSlhuSkZPavN7u1c2Fw==",
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/fill-range": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
@@ -5116,6 +5156,23 @@
         "node": ">=8"
       }
     },
+    "node_modules/jake": {
+      "version": "10.9.4",
+      "resolved": "https://registry.npmjs.org/jake/-/jake-10.9.4.tgz",
+      "integrity": "sha512-wpHYzhxiVQL+IV05BLE2Xn34zW1S223hvjtqk0+gsPrwd/8JNLXJgZZM/iPFsYc1xyphF+6M6EvdE5E9MBGkDA==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "async": "^3.2.6",
+        "filelist": "^1.0.4",
+        "picocolors": "^1.1.1"
+      },
+      "bin": {
+        "jake": "bin/cli.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/jest-worker": {
       "version": "27.5.1",
       "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-27.5.1.tgz",
@@ -6670,7 +6727,6 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
       "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==",
-      "dev": true,
       "license": "ISC"
     },
     "node_modules/picomatch": {
diff --git a/package.json b/package.json
index 5597769..2e88b91 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "license": "CC-BY-NC-ND-4.0",
   "dependencies": {
     "body-parser": "^1.17.2",
-    "ejs": "^2.5.5",
+    "ejs": "^3.1.10",
     "express": "^4.14.1",
     "express-session": "^1.15.6",
     "flat": "^2.0.1",