diff --git a/package-lock.json b/package-lock.json
index 93eb0a9..121b6af 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -312,6 +312,14 @@
         "@phosphor/virtualdom": "^1.2.0"
       }
     },
+    "@rdfjs/types": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@rdfjs/types/-/types-1.0.1.tgz",
+      "integrity": "sha512-YxVkH0XrCNG3MWeZxfg596GFe+oorTVusmNxRP6ZHTsGczZ8AGvG3UchRNkg3Fy4MyysI7vBAA5YZbESL+VmHQ==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/codemirror": {
       "version": "0.0.79",
       "resolved": "https://registry.npmjs.org/@types/codemirror/-/codemirror-0.0.79.tgz",
@@ -677,15 +685,13 @@
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     },
-    "n3": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/n3/-/n3-1.2.1.tgz",
-      "integrity": "sha512-5va8zsh02owDul7+5bj35cGOzWU7DeJHwQK3F8NDKtiYqPgWcFTg/zLxJs1JeRF2n6j5PI/eR9DCokS7nLrevA=="
-    },
     "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA=="
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "normalize.css": {
       "version": "8.0.1",
@@ -936,6 +942,14 @@
       "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.1.1.tgz",
       "integrity": "sha512-w7fLxIRCRT7U8Qu53jQnJyPkYZIaR4n5151KMfcJlO/A9397Wxb1amJvROTK6TOnp7PfoAmg/qXiNHI+08jRfA=="
     },
+    "rdf-data-factory": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/rdf-data-factory/-/rdf-data-factory-1.1.0.tgz",
+      "integrity": "sha512-g8feOVZ/KL1OK2Pco/jDBDFh4m29QDsOOD+rWloG9qFvIzRFchGy2CviLUX491E0ByewXxMpaq/A3zsWHQA16A==",
+      "requires": {
+        "@rdfjs/types": "*"
+      }
+    },
     "react": {
       "version": "16.8.6",
       "resolved": "https://registry.npmjs.org/react/-/react-16.8.6.tgz",
@@ -1063,11 +1077,11 @@
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     },
     "sparqljs": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/sparqljs/-/sparqljs-3.0.0.tgz",
-      "integrity": "sha512-uPlGML5IWfex1Up2YSA2LnvEJjyL87KCNXQ2vDnDbgraWKivy/pHxarlJA+6NUWFllNgN+1LmWFzanTRg8mhZg==",
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/sparqljs/-/sparqljs-3.5.1.tgz",
+      "integrity": "sha512-sHc6z7hNF3ACvXurKe8hT1sD52Fc0fN3uPLS6SQnXRV9CJl33GNAS4w5Dd3X3GgykUt9SlnjhI1QRKhLzun4qQ==",
       "requires": {
-        "n3": "^1.0.4"
+        "rdf-data-factory": "^1.0.4"
       }
     },
     "srcset": {
@@ -1095,6 +1109,11 @@
         "has-flag": "^3.0.0"
       }
     },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o="
+    },
     "tslib": {
       "version": "1.9.3",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
@@ -1150,6 +1169,20 @@
         "loose-envify": "^1.0.0"
       }
     },
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",