diff --git a/packages.json b/packages.json
index b1e1d23..fef6877 100644
--- a/packages.json
+++ b/packages.json
@@ -7914,6 +7914,18 @@
     "license": "Apache License 2.0",
     "web": "https://github.com/edubart/arraymancer-vision"
   },
+  {
+    "name": "variantkey",
+    "url": "https://github.com/brentp/variantkey-nim",
+    "method": "git",
+    "tags": [
+      "vcf",
+      "variant",
+      "genomics"
+    ],
+    "description": "encode/decode variants to/from uint64",
+    "license": "MIT"
+  },
   {
     "name": "genoiser",
     "url": "https://github.com/brentp/genoiser",