diff --git a/package-lock.json b/package-lock.json
index 789c3fd..0605dd4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,60 +1,72 @@
 {
-    "name": "bsl",
-    "version": "0.0.11",
-    "lockfileVersion": 1,
-    "requires": true,
-    "dependencies": {
-        "@octetstream/promisify": {
-            "version": "2.0.2",
-            "resolved": "https://registry.npmjs.org/@octetstream/promisify/-/promisify-2.0.2.tgz",
-            "integrity": "sha512-7XHoRB61hxsz8lBQrjC1tq/3OEIgpvGWg6DKAdwi7WRzruwkmsdwmOoUXbU4Dtd4RSOMDwed0SkP3y8UlMt1Bg=="
-        },
-        "@types/node": {
-            "version": "14.0.23",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.23.tgz",
-            "integrity": "sha512-Z4U8yDAl5TFkmYsZdFPdjeMa57NOvnaf1tljHzhouaPEp7LCj2JKkejpI1ODviIAQuW4CcQmxkQ77rnLsOOoKw==",
-            "dev": true
-        },
-        "@types/vscode": {
-            "version": "1.47.0",
-            "resolved": "https://registry.npmjs.org/@types/vscode/-/vscode-1.47.0.tgz",
-            "integrity": "sha512-nJA37ykkz9FYA0ZOQUSc3OZnhuzEW2vUhUEo4MiduUo82jGwwcLfyvmgd/Q7b0WrZAAceojGhZybg319L24bTA==",
-            "dev": true
-        },
-        "argparse": {
-            "version": "1.0.10",
-            "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-            "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
-            "requires": {
-                "sprintf-js": "~1.0.2"
-            }
-        },
-        "esprima": {
-            "version": "4.0.1",
-            "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
-            "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A=="
-        },
-        "js-yaml": {
-            "version": "3.14.0",
-            "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.0.tgz",
-            "integrity": "sha512-/4IbIeHcD9VMHFqDR/gQ7EdZdLimOvW2DdcxFjdyyZ9NsbS+ccrXqVWDtab/lRl5AlUqmpBx8EhPaWR+OtY17A==",
-            "requires": {
-                "argparse": "^1.0.7",
-                "esprima": "^4.0.0"
-            }
-        },
-        "promise-fs": {
-            "version": "2.1.1",
-            "resolved": "https://registry.npmjs.org/promise-fs/-/promise-fs-2.1.1.tgz",
-            "integrity": "sha512-43p7e4QzAQ3w6eyN0+gbBL7jXiZFWLWYITg9wIObqkBySu/a5K1EDcQ/S6UyB/bmiZWDA4NjTbcopKLTaKcGSw==",
-            "requires": {
-                "@octetstream/promisify": "2.0.2"
-            }
-        },
-        "sprintf-js": {
-            "version": "1.0.3",
-            "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
-            "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw="
-        }
-    }
+		"name": "bsl",
+		"version": "0.0.15",
+		"lockfileVersion": 3,
+		"requires": true,
+		"packages": {
+				"": {
+						"version": "0.0.15",
+						"license": "MIT",
+						"dependencies": {
+								"js-yaml": "^4.1.1",
+								"promise-fs": "^2.1.1"
+						},
+						"devDependencies": {
+								"@types/node": "^14.0.23",
+								"@types/vscode": "^1.26.0"
+						},
+						"engines": {
+								"vscode": "^1.26.0"
+						}
+				},
+				"node_modules/@octetstream/promisify": {
+						"version": "2.0.2",
+						"resolved": "https://registry.npmjs.org/@octetstream/promisify/-/promisify-2.0.2.tgz",
+						"integrity": "sha512-7XHoRB61hxsz8lBQrjC1tq/3OEIgpvGWg6DKAdwi7WRzruwkmsdwmOoUXbU4Dtd4RSOMDwed0SkP3y8UlMt1Bg==",
+						"engines": {
+								"node": "6.x || >=8.x"
+						}
+				},
+				"node_modules/@types/node": {
+						"version": "14.0.23",
+						"resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.23.tgz",
+						"integrity": "sha512-Z4U8yDAl5TFkmYsZdFPdjeMa57NOvnaf1tljHzhouaPEp7LCj2JKkejpI1ODviIAQuW4CcQmxkQ77rnLsOOoKw==",
+						"dev": true
+				},
+				"node_modules/@types/vscode": {
+						"version": "1.47.0",
+						"resolved": "https://registry.npmjs.org/@types/vscode/-/vscode-1.47.0.tgz",
+						"integrity": "sha512-nJA37ykkz9FYA0ZOQUSc3OZnhuzEW2vUhUEo4MiduUo82jGwwcLfyvmgd/Q7b0WrZAAceojGhZybg319L24bTA==",
+						"dev": true
+				},
+				"node_modules/argparse": {
+						"version": "2.0.1",
+						"resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
+						"integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
+						"license": "Python-2.0"
+				},
+				"node_modules/js-yaml": {
+						"version": "4.1.1",
+						"resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
+						"integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
+						"license": "MIT",
+						"dependencies": {
+								"argparse": "^2.0.1"
+						},
+						"bin": {
+								"js-yaml": "bin/js-yaml.js"
+						}
+				},
+				"node_modules/promise-fs": {
+						"version": "2.1.1",
+						"resolved": "https://registry.npmjs.org/promise-fs/-/promise-fs-2.1.1.tgz",
+						"integrity": "sha512-43p7e4QzAQ3w6eyN0+gbBL7jXiZFWLWYITg9wIObqkBySu/a5K1EDcQ/S6UyB/bmiZWDA4NjTbcopKLTaKcGSw==",
+						"dependencies": {
+								"@octetstream/promisify": "2.0.2"
+						},
+						"engines": {
+								"node": ">=6"
+						}
+				}
+		}
 }
diff --git a/package.json b/package.json
index 5929301..5e94ee0 100644
--- a/package.json
+++ b/package.json
@@ -76,7 +76,7 @@
         ]
     },
     "dependencies": {
-        "js-yaml": "^3.14.0",
+        "js-yaml": "^4.1.1",
         "promise-fs": "^2.1.1"
     },
     "devDependencies": {