diff --git a/package-lock.json b/package-lock.json
index 96b1624..b8aea3f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,29 +1,272 @@
 {
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       "dev": true,
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+      "dev": true,
+      "requires": {
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+      }
+    },
+    "@webassemblyjs/leb128": {
+      "version": "1.5.13",
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+        }
+      }
+    },
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-edit/-/wasm-edit-1.5.13.tgz",
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+      "requires": {
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+        "@webassemblyjs/wast-printer": "1.5.13",
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+          "dev": true,
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+    },
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+        "@webassemblyjs/helper-wasm-bytecode": "1.5.13",
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+        "@webassemblyjs/leb128": "1.5.13",
+        "@webassemblyjs/utf8": "1.5.13"
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+      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-opt/-/wasm-opt-1.5.13.tgz",
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@@ -36,15 +279,15 @@
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-      "integrity": "sha1-06/3jpJ3VJdx2vAWTP9ISCt1T8Y=",
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@@ -71,12 +314,6 @@
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@@ -162,6 +372,23 @@
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+          "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
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@@ -170,12 +397,6 @@
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@@ -238,9 +459,9 @@
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diff --git a/package.json b/package.json
index 42d23ca..71ce2d0 100644
--- a/package.json
+++ b/package.json
@@ -23,20 +23,20 @@
     "url": "https://github.com/yishn/tikzcd-editor/issues"
   },
   "dependencies": {
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+    "classnames": "^2.2.6",
     "copy-text-to-clipboard": "^1.0.4",
     "jsx-tikzcd": "^0.3.0",
-    "preact": "^8.2.9"
+    "preact": "^8.3.0"
   },
   "devDependencies": {
     "babel-core": "^6.26.3",
-    "babel-loader": "^7.1.4",
-    "babel-preset-env": "^1.6.1",
+    "babel-loader": "^7.1.5",
+    "babel-preset-env": "^1.7.0",
     "babel-preset-react": "^6.24.1",
     "babel-preset-stage-1": "^6.24.1",
     "http-server": "^0.11.1",
-    "webpack": "^4.6.0",
-    "webpack-cli": "^2.1.2"
+    "webpack": "^4.16.5",
+    "webpack-cli": "^3.1.0"
   },
   "scripts": {
     "start": "http-server",