diff --git a/package-lock.json b/package-lock.json
index 8247604..c0aa5b3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
         "@geo-maps/countries-land-10km": "^0.6.0",
         "@js-temporal/polyfill": "^0.4.4",
         "@observablehq/framework": "^1.13.0",
-        "@vvo/tzdb": "^6.157.0",
+        "@vvo/tzdb": "^6.159.0",
         "all-the-cities": "^3.1.0",
         "d3-dsv": "^3.0.1",
         "d3-time-format": "^4.1.0",
@@ -2145,9 +2145,10 @@
       }
     },
     "node_modules/@vvo/tzdb": {
-      "version": "6.157.0",
-      "resolved": "https://registry.npmjs.org/@vvo/tzdb/-/tzdb-6.157.0.tgz",
-      "integrity": "sha512-NB1SgzdVqdYvH3ExzY2fkcGMfAa7Zqrn1t2f+o4A8M4h2Mj6WiyQADPgSIdwR8crh+E6Mh/7nMvyIeZIs3OQJA=="
+      "version": "6.159.0",
+      "resolved": "https://registry.npmjs.org/@vvo/tzdb/-/tzdb-6.159.0.tgz",
+      "integrity": "sha512-rUg7AiPoYioNyNdkhsiHGoixV9VEHNLj4fl0xknUMDHDmCm0K2mntGjrR5BtwjlhUmklStHwgrt7XnVGVeMSxg==",
+      "license": "MIT"
     },
     "node_modules/@zeit/schemas": {
       "version": "2.36.0",
diff --git a/package.json b/package.json
index a06f4d3..2146f95 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "@geo-maps/countries-land-10km": "^0.6.0",
     "@js-temporal/polyfill": "^0.4.4",
     "@observablehq/framework": "^1.13.0",
-    "@vvo/tzdb": "^6.157.0",
+    "@vvo/tzdb": "^6.159.0",
     "all-the-cities": "^3.1.0",
     "d3-dsv": "^3.0.1",
     "d3-time-format": "^4.1.0",