diff --git a/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package-lock.json b/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package-lock.json
index 846d6fd..003a299 100644
--- a/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package-lock.json
+++ b/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package-lock.json
@@ -165,7 +165,8 @@
       }
     },
     "@types/d3-sankey": {
-      "version": "github:aendrew/d3-sankey#81c5a27547c064f094de17b9df9e77c47e42fc8d"
+      "version": "github:aendrew/d3-sankey#81c5a27547c064f094de17b9df9e77c47e42fc8d",
+      "from": "github:aendrew/d3-sankey#81c5a27547c064f094de17b9df9e77c47e42fc8d"
     },
     "@types/d3-scale": {
       "version": "1.0.11",
@@ -591,6 +592,14 @@
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         "slash": "1.0.0",
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
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+        }
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
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@@ -961,6 +992,13 @@
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
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+        }
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@@ -1364,6 +1410,13 @@
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
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@@ -1380,6 +1433,13 @@
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         "invariant": "2.2.2",
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+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
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@@ -1391,6 +1451,13 @@
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@@ -3294,6 +3361,12 @@
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@@ -4052,7 +4125,8 @@
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@@ -4115,6 +4191,7 @@
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@@ -4122,6 +4199,7 @@
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@@ -4129,7 +4207,8 @@
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@@ -4143,30 +4222,36 @@
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@@ -4201,7 +4286,8 @@
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@@ -4228,7 +4314,8 @@
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@@ -4247,11 +4334,13 @@
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@@ -4302,6 +4391,7 @@
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@@ -4313,7 +4403,8 @@
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@@ -4337,6 +4428,7 @@
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@@ -4346,7 +4438,8 @@
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@@ -4368,7 +4462,8 @@
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@@ -4378,6 +4473,7 @@
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@@ -4389,7 +4485,8 @@
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@@ -4452,11 +4549,13 @@
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@@ -4464,17 +4563,20 @@
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@@ -4524,7 +4626,8 @@
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@@ -4539,6 +4642,7 @@
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@@ -4564,7 +4668,8 @@
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@@ -4573,7 +4678,8 @@
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@@ -4606,6 +4712,7 @@
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@@ -4648,13 +4755,15 @@
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@@ -4674,6 +4783,7 @@
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@@ -4704,6 +4814,7 @@
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@@ -4713,6 +4824,7 @@
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@@ -4725,6 +4837,7 @@
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@@ -4737,6 +4850,7 @@
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@@ -4786,7 +4900,8 @@
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@@ -4811,7 +4926,8 @@
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@@ -5211,6 +5327,14 @@
         "lodash": "4.17.4",
         "pretty-error": "2.1.1",
         "toposort": "1.0.6"
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+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        }
       }
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@@ -5379,6 +5503,11 @@
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+        "lodash": {
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+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+        },
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@@ -5592,6 +5721,14 @@
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         "through": "2.3.8"
+      },
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+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        }
       }
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@@ -6173,9 +6310,9 @@
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-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+      "version": "4.17.19",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
+      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
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@@ -9288,6 +9425,12 @@
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           "dev": true
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+        "lodash": {
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+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
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@@ -10020,6 +10163,14 @@
           "dev": true,
           "requires": {
             "lodash": "4.17.4"
+          },
+          "dependencies": {
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+              "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+              "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+              "dev": true
+            }
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@@ -10168,6 +10319,14 @@
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+          },
+          "dependencies": {
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+              "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+              "dev": true
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diff --git a/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package.json b/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package.json
index f8d7025..9bb23a3 100644
--- a/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package.json
+++ b/js/d3/D3.js_4.x_Data_Visualization/Chapters/1/package.json
@@ -65,7 +65,7 @@
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     "koa": "^2.0.0-alpha.7",
     "koa-bodyparser": "^3.2.0",
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.19",
     "rxjs": "^5.0.0-rc.4",
     "sentiment": "^3.0.0",
     "topojson": "^2.0.0",