diff --git a/README.md b/README.md
index f83ac62..20ae5fe 100644
--- a/README.md
+++ b/README.md
@@ -25,9 +25,9 @@ var piyg = d3.scaleSequential(d3.interpolatePiYG);
 If you use NPM, `npm install d3-scale-chromatic`. Otherwise, download the [latest release](https://github.com/d3/d3-scale-chromatic/releases/latest) or load directly from [d3js.org](https://d3js.org) as a [standalone library](https://d3js.org/d3-scale-chromatic.v1.min.js). AMD, CommonJS, and vanilla environments are supported. In vanilla, a `d3` global is exported:
 
 ```html
-<script src="https://d3js.org/d3-color.v1.min.js"></script>
-<script src="https://d3js.org/d3-interpolate.v1.min.js"></script>
-<script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script>
+<script src="https://d3js.org/d3-color.v2.min.js"></script>
+<script src="https://d3js.org/d3-interpolate.v2.min.js"></script>
+<script src="https://d3js.org/d3-scale-chromatic.v2.min.js"></script>
 <script>
 
 var yellow = d3.interpolateYlGn(0), // "rgb(255, 255, 229)"
@@ -40,7 +40,7 @@ var yellow = d3.interpolateYlGn(0), // "rgb(255, 255, 229)"
 Or, as part of the [D3 default bundle](https://github.com/d3/d3):
 
 ```html
-<script src="https://d3js.org/d3.v5.min.js"></script>
+<script src="https://d3js.org/d3.v6.min.js"></script>
 <script>
 
 var yellow = d3.interpolateYlGn(0), // "rgb(255, 255, 229)"
diff --git a/package.json b/package.json
index 990a33b..85fc10d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,9 @@
 {
   "name": "d3-scale-chromatic",
-  "version": "1.5.0",
+  "version": "2.0.0-rc.1",
+  "publishConfig": {
+    "tag": "next"
+  },
   "description": "Sequential, diverging and categorical color schemes.",
   "keywords": [
     "d3",
@@ -36,8 +39,8 @@
     "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd - && zip -j dist/${npm_package_name}.zip -- LICENSE README.md dist/${npm_package_name}.js dist/${npm_package_name}.min.js"
   },
   "dependencies": {
-    "d3-color": "1",
-    "d3-interpolate": "1"
+    "d3-color": ">=2.0.0-rc.1",
+    "d3-interpolate": ">=2.0.0-rc.1"
   },
   "devDependencies": {
     "eslint": "6",
diff --git a/src/ramp.js b/src/ramp.js
index 766c245..14f4050 100644
--- a/src/ramp.js
+++ b/src/ramp.js
@@ -1,5 +1,3 @@
 import {interpolateRgbBasis} from "d3-interpolate";
 
-export default function(scheme) {
-  return interpolateRgbBasis(scheme[scheme.length - 1]);
-}
+export default scheme => interpolateRgbBasis(scheme[scheme.length - 1]);
diff --git a/src/scheme.js b/src/scheme.js
deleted file mode 100644
index 49a7208..0000000
--- a/src/scheme.js
+++ /dev/null
@@ -1,11 +0,0 @@
-export default function(ranges) {
-  ranges = ranges.map(function(colors) {
-    return colors.match(/.{6}/g).map(function(x) {
-      return "#" + x;
-    });
-  });
-  var n0 = ranges[0].length;
-  return function(n) {
-    return ranges[n - n0];
-  };
-}
diff --git a/yarn.lock b/yarn.lock
index 30896c8..cc25e1e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -169,17 +169,17 @@ cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-d3-color@1:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/d3-color/-/d3-color-1.3.0.tgz#675818359074215b020dc1d41d518136dcb18fa9"
-  integrity sha512-NHODMBlj59xPAwl2BDiO2Mog6V+PrGRtBfWKqKRrs9MCqlSkIEb0Z/SfY7jW29ReHTDC/j+vwXhnZcXI3+3fbg==
+d3-color@>=2.0.0-rc.1:
+  version "2.0.0-rc.1"
+  resolved "https://registry.yarnpkg.com/d3-color/-/d3-color-2.0.0-rc.1.tgz#306e5424d97d7c392fbb5f4e2f71a19692b625d1"
+  integrity sha512-qG47cofgHAELBblsjxvnloC3EQ0wu33aqZ5DdV8wljDKJEcY1eTX6WrIstIG6y93hJvaVFCzQmglNXt6B6bqBA==
 
-d3-interpolate@1:
-  version "1.3.2"
-  resolved "https://registry.yarnpkg.com/d3-interpolate/-/d3-interpolate-1.3.2.tgz#417d3ebdeb4bc4efcc8fd4361c55e4040211fd68"
-  integrity sha512-NlNKGopqaz9qM1PXh9gBF1KSCVh+jSFErrSlD/4hybwoNX/gt1d8CDbDW+3i+5UOHhjC6s6nMvRxcuoMVNgL2w==
+d3-interpolate@>=2.0.0-rc.1:
+  version "2.0.0-rc.1"
+  resolved "https://registry.yarnpkg.com/d3-interpolate/-/d3-interpolate-2.0.0-rc.1.tgz#894989e6051c8fef5632be1a67d6734b4974b3e8"
+  integrity sha512-QJ7SdIqRvHada4WDkeCosJbn56ssRCs0QyPQhOZnlgpD3aNw14zssGrwF14E4ZCgrZgDf8J6mXXLAcyFnFhX7A==
   dependencies:
-    d3-color "1"
+    d3-color ">=2.0.0-rc.1"
 
 debug@^4.0.1:
   version "4.1.1"