diff --git a/package-lock.json b/package-lock.json
index ab18aa2..7782799 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-network-time",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1514,9 +1514,9 @@
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     },
     "d3-color": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-1.4.1.tgz",
-      "integrity": "sha512-p2sTHSLCJI2QKunbGb7ocOh7DgTAn8IrLx21QRc/BSnodXM4sv6aLQlnfpvehFMLZEfBc6g9pH9SWQccFYfJ9Q=="
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-3.1.0.tgz",
+      "integrity": "sha512-zg/chbXyeBtMQ1LbD/WSoW2DpC3I0mpmPdW+ynRTj/x2DAWYrIY7qeZIHidozwV24m4iavr15lNwIwLxRmOxhA=="
     },
     "d3-dispatch": {
       "version": "1.0.6",
@@ -1524,18 +1524,25 @@
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     },
     "d3-drag": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/d3-drag/-/d3-drag-1.2.5.tgz",
-      "integrity": "sha512-rD1ohlkKQwMZYkQlYVCrSFxsWPzI97+W+PaEIBNTMxRuxz9RF0Hi5nJWHGVJ3Om9d2fRTe1yOBINJyy/ahV95w==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-drag/-/d3-drag-3.0.0.tgz",
+      "integrity": "sha512-pWbUJLdETVA8lQNJecMxoXfH6x+mO2UQo8rSmZ+QqxcbyA3hfeprFgIT//HW2nlHChWeIIMwS2Fq+gEARkhTkg==",
       "requires": {
-        "d3-dispatch": "1",
-        "d3-selection": "1"
+        "d3-dispatch": "1 - 3",
+        "d3-selection": "3"
+      },
+      "dependencies": {
+        "d3-selection": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+          "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
+        }
       }
     },
     "d3-ease": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-1.0.6.tgz",
-      "integrity": "sha512-SZ/lVU7LRXafqp7XtIcBdxnWl8yyLpgOmzAk0mWBI9gXNzLDx5ybZgnRbH9dN/yY5tzVBqCQ9avltSnqVwessQ=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-3.0.1.tgz",
+      "integrity": "sha512-wR/XK3D3XcLIZwpbvQwQ5fK+8Ykds1ip7A2Txe0yxncXSdq1L9skcG7blcedkOX+ZcgxGAmLX1FrRGbADwzi0w=="
     },
     "d3-force": {
       "version": "2.0.1",
@@ -1558,11 +1565,11 @@
       "integrity": "sha512-j8tPxlqh1srJHAtxfvOUwKNYJkQuBFdM1+JAUfq6xqH5eAqf93L7oG1NVqDa4CpFZNvnNKtCYEUC8KY9yEn9lQ=="
     },
     "d3-interpolate": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/d3-interpolate/-/d3-interpolate-1.4.0.tgz",
-      "integrity": "sha512-V9znK0zc3jOPV4VD2zZn0sDhZU3WAE2bmlxdIwwQPPzPjvyLkd8B3JUVdS1IDUFDkWZ72c9qnv1GK2ZagTZ8EA==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-interpolate/-/d3-interpolate-3.0.1.tgz",
+      "integrity": "sha512-3bYs1rOD33uo8aqJfKP3JWPAibgw8Zm2+L9vBKEHJ2Rg+viTR7o5Mmv5mZcieN+FRYaAOWX5SJATX6k1PWz72g==",
       "requires": {
-        "d3-color": "1"
+        "d3-color": "1 - 3"
       }
     },
     "d3-path": {
@@ -1576,15 +1583,33 @@
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     },
     "d3-scale": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-3.2.1.tgz",
-      "integrity": "sha512-huz5byJO/6MPpz6Q8d4lg7GgSpTjIZW/l+1MQkzKfu2u8P6hjaXaStOpmyrD6ymKoW87d2QVFCKvSjLwjzx/rA==",
-      "requires": {
-        "d3-array": "1.2.0 - 2",
-        "d3-format": "1",
-        "d3-interpolate": "^1.2.0",
-        "d3-time": "1",
-        "d3-time-format": "2"
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-4.0.2.tgz",
+      "integrity": "sha512-GZW464g1SH7ag3Y7hXjf8RoUuAFIqklOAq3MRl4OaWabTFJY9PN/E1YklhXLh+OQ3fM9yS2nOkCoS+WLZ6kvxQ==",
+      "requires": {
+        "d3-array": "2.10.0 - 3",
+        "d3-format": "1 - 3",
+        "d3-interpolate": "1.2.0 - 3",
+        "d3-time": "2.1.1 - 3",
+        "d3-time-format": "2 - 4"
+      },
+      "dependencies": {
+        "d3-array": {
+          "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": {
+            "internmap": "1 - 2"
+          }
+        },
+        "d3-time": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-3.0.0.tgz",
+          "integrity": "sha512-zmV3lRnlaLI08y9IMRXSDshQb5Nj77smnfpnd2LrBa/2K281Jijactokeak14QacHs/kKq0AQ121nidNYlarbQ==",
+          "requires": {
+            "d3-array": "2 - 3"
+          }
+        }
       }
     },
     "d3-selection": {
@@ -1619,28 +1644,34 @@
       "integrity": "sha512-B1JDm0XDaQC+uvo4DT79H0XmBskgS3l6Ve+1SBCfxgmtIb1AVrPIoqd+nPSv+loMX8szQ0sVUhGngL7D5QPiXw=="
     },
     "d3-transition": {
-      "version": "1.3.2",
-      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-1.3.2.tgz",
-      "integrity": "sha512-sc0gRU4PFqZ47lPVHloMn9tlPcv8jxgOQg+0zjhfZXMQuvppjG6YuwdMBE0TuqCZjeJkLecku/l9R0JPcRhaDA==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-3.0.1.tgz",
+      "integrity": "sha512-ApKvfjsSR6tg06xrL434C0WydLr7JewBB3V+/39RMHsaXTOG0zmt/OAXeng5M5LBm0ojmxJrpomQVZ1aPvBL4w==",
       "requires": {
-        "d3-color": "1",
-        "d3-dispatch": "1",
-        "d3-ease": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "^1.1.0",
-        "d3-timer": "1"
+        "d3-color": "1 - 3",
+        "d3-dispatch": "1 - 3",
+        "d3-ease": "1 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-timer": "1 - 3"
       }
     },
     "d3-zoom": {
-      "version": "1.8.3",
-      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-1.8.3.tgz",
-      "integrity": "sha512-VoLXTK4wvy1a0JpH2Il+F2CiOhVu7VRXWF5M/LroMIh3/zBAC3WAt7QoIvPibOavVo20hN6/37vwAsdBejLyKQ==",
-      "requires": {
-        "d3-dispatch": "1",
-        "d3-drag": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "1",
-        "d3-transition": "1"
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-3.0.0.tgz",
+      "integrity": "sha512-b8AmV3kfQaqWAuacbPuNbL6vahnOJflOhexLzMMNLga62+/nh0JzvJ0aO/5a5MVgUFGS7Hu1P9P03o3fJkDCyw==",
+      "requires": {
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "2 - 3",
+        "d3-transition": "2 - 3"
+      },
+      "dependencies": {
+        "d3-selection": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+          "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
+        }
       }
     },
     "debug": {
@@ -2466,6 +2497,11 @@
         }
       }
     },
+    "internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg=="
+    },
     "invariant": {
       "version": "2.2.4",
       "resolved": "https://registry.npmjs.org/invariant/-/invariant-2.2.4.tgz",
diff --git a/package.json b/package.json
index 53f14d6..65ee48b 100644
--- a/package.json
+++ b/package.json
@@ -23,12 +23,12 @@
     "d3-force": "^2.0.1",
     "d3-format": "^1.4.4",
     "d3-hierarchy": "^1.1.9",
-    "d3-scale": "^3.2.1",
+    "d3-scale": "^4.0.2",
     "d3-selection": "^1.4.1",
     "d3-shape": "^1.3.7",
     "d3-time-format": "^2.2.3",
-    "d3-transition": "^1.3.2",
-    "d3-zoom": "^1.8.3"
+    "d3-transition": "^3.0.1",
+    "d3-zoom": "^3.0.0"
   },
   "scripts": {
     "pretest": "rm -rf build && mkdir build && rollup -c ./rollup.config.js",