diff --git a/package-lock.json b/package-lock.json
index 6945ea0..dc69414 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,7 +21,7 @@
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         "@types/walk": "2.3.1",
         "classnames": "2.3.1",
-        "d3": "7.4.4",
+        "d3": "7.6.1",
         "front-matter": "4.0.2",
         "fs-extra": "10.1.0",
         "highlight.js": "11.5.1",
@@ -6218,16 +6218,16 @@
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-      "resolved": "https://registry.npmjs.org/d3/-/d3-7.4.4.tgz",
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+      "resolved": "https://registry.npmjs.org/d3/-/d3-7.6.1.tgz",
+      "integrity": "sha512-txMTdIHFbcpLx+8a0IFhZsbp+PfBBPt8yfbmukZTQFroKuFqIwqswF0qE5JXWefylaAVpSXFoKm3yP+jpNLFLw==",
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         "d3-array": "3",
         "d3-axis": "3",
         "d3-brush": "3",
         "d3-chord": "3",
         "d3-color": "3",
-        "d3-contour": "3",
+        "d3-contour": "4",
         "d3-delaunay": "6",
         "d3-dispatch": "3",
         "d3-drag": "3",
@@ -6258,9 +6258,9 @@
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-      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.1.6.tgz",
-      "integrity": "sha512-DCbBBNuKOeiR9h04ySRBMW52TFVc91O9wJziuyXw6Ztmy8D3oZbmCkOO3UHKC7ceNJsN2Mavo9+vwV8EAEUXzA==",
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.2.0.tgz",
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@@ -6311,11 +6311,11 @@
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-      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-3.0.1.tgz",
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-4.0.0.tgz",
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       "dependencies": {
-        "d3-array": "2 - 3"
+        "d3-array": "^3.2.0"
       },
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@@ -20520,16 +20520,16 @@
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     "d3": {
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-      "resolved": "https://registry.npmjs.org/d3/-/d3-7.4.4.tgz",
-      "integrity": "sha512-97FE+MYdAlV3R9P74+R3Uar7wUKkIFu89UWMjEaDhiJ9VxKvqaMxauImy8PC2DdBkdM2BxJOIoLxPrcZUyrKoQ==",
+      "version": "7.6.1",
+      "resolved": "https://registry.npmjs.org/d3/-/d3-7.6.1.tgz",
+      "integrity": "sha512-txMTdIHFbcpLx+8a0IFhZsbp+PfBBPt8yfbmukZTQFroKuFqIwqswF0qE5JXWefylaAVpSXFoKm3yP+jpNLFLw==",
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         "d3-axis": "3",
         "d3-brush": "3",
         "d3-chord": "3",
         "d3-color": "3",
-        "d3-contour": "3",
+        "d3-contour": "4",
         "d3-delaunay": "6",
         "d3-dispatch": "3",
         "d3-drag": "3",
@@ -20557,9 +20557,9 @@
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     "d3-array": {
-      "version": "3.1.6",
-      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.1.6.tgz",
-      "integrity": "sha512-DCbBBNuKOeiR9h04ySRBMW52TFVc91O9wJziuyXw6Ztmy8D3oZbmCkOO3UHKC7ceNJsN2Mavo9+vwV8EAEUXzA==",
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.2.0.tgz",
+      "integrity": "sha512-3yXFQo0oG3QCxbF06rMPFyGRMGJNS7NvsV1+2joOjbBE+9xvWQ8+GcMJAjRCzw06zQ3/arXeJgbPYcjUCuC+3g==",
       "requires": {
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@@ -20595,11 +20595,11 @@
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     "d3-contour": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-3.0.1.tgz",
-      "integrity": "sha512-0Oc4D0KyhwhM7ZL0RMnfGycLN7hxHB8CMmwZ3+H26PWAG0ozNuYG5hXSDNgmP1SgJkQMrlG6cP20HoaSbvcJTQ==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-4.0.0.tgz",
+      "integrity": "sha512-7aQo0QHUTu/Ko3cP9YK9yUTxtoDEiDGwnBHyLxG5M4vqlBkO/uixMRele3nfsfj6UXOcuReVpVXzAboGraYIJw==",
       "requires": {
-        "d3-array": "2 - 3"
+        "d3-array": "^3.2.0"
       }
     },
     "d3-delaunay": {
diff --git a/package.json b/package.json
index fbd268b..31dcd88 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@types/sanitize-html": "2.6.2",
     "@types/walk": "2.3.1",
     "classnames": "2.3.1",
-    "d3": "7.4.4",
+    "d3": "7.6.1",
     "front-matter": "4.0.2",
     "fs-extra": "10.1.0",
     "highlight.js": "11.5.1",