diff --git a/package-lock.json b/package-lock.json
index 15339118..bdf4a397 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -110,9 +110,9 @@
       "integrity": "sha1-aL+8NJM4o4DETYrMT7wzBKotjA4="
     },
     "d3-format": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-1.2.2.tgz",
-      "integrity": "sha512-zH9CfF/3C8zUI47nsiKfD0+AGDEuM8LwBIP7pBVpyR4l/sKkZqITmMtxRp04rwBrlshIZ17XeFAaovN3++wzkw=="
+      "version": "1.4.5",
+      "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-1.4.5.tgz",
+      "integrity": "sha512-J0piedu6Z8iB6TbIGfZgDzfXxUFN3qQRMofy2oPdXzQibYGqPB/9iMcxr/TGalU+2RsyDO+U4f33id8tbnSRMQ=="
     },
     "d3-hierarchy": {
       "version": "1.1.5",
@@ -170,6 +170,13 @@
         "d3-interpolate": "1.1.6",
         "d3-time": "1.0.8",
         "d3-time-format": "2.1.1"
+      },
+      "dependencies": {
+        "d3-format": {
+          "version": "1.2.2",
+          "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-1.2.2.tgz",
+          "integrity": "sha512-zH9CfF/3C8zUI47nsiKfD0+AGDEuM8LwBIP7pBVpyR4l/sKkZqITmMtxRp04rwBrlshIZ17XeFAaovN3++wzkw=="
+        }
       }
     },
     "d3-selection": {
diff --git a/package.json b/package.json
index 77a9cb54..0ee1bdba 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "d3-drag": "1.2.1",
     "d3-dsv": "1.0.8",
     "d3-ease": "1.0.3",
-    "d3-format": "1.2.2",
+    "d3-format": "1.4.5",
     "d3-hierarchy": "1.1.5",
     "d3-interpolate": "1.1.6",
     "d3-path": "1.0.5",