diff --git a/package.json b/package.json
index b2c5b4d6..07b2c273 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "arquero",
-  "version": "4.3.0",
+  "version": "4.4.0",
   "description": "Query processing and transformation of array-backed data tables.",
   "keywords": [
     "data",
@@ -37,14 +37,14 @@
     "prepublishOnly": "yarn test && yarn lint && yarn build"
   },
   "dependencies": {
-    "acorn": "^8.1.1",
+    "acorn": "^8.2.1",
     "apache-arrow": "^4.0.0",
     "node-fetch": "^2.6.1"
   },
   "devDependencies": {
     "@rollup/plugin-json": "^4.1.0",
     "@rollup/plugin-node-resolve": "^11.2.1",
-    "eslint": "^7.24.0",
+    "eslint": "^7.25.0",
     "esm": "^3.2.25",
     "rimraf": "^3.0.2",
     "rollup": "^2.45.2",
diff --git a/yarn.lock b/yarn.lock
index 919bf712..a6920553 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -84,9 +84,9 @@
   integrity sha512-7btbphLrKvo5yl/5CC2OCxUSMx1wV1wvGT1qDXkSt7yi00/YW7E8k6qzXqJHsp+WU0eoG7r6MTQQXI9lIvd0qA==
 
 "@types/node@*":
-  version "14.14.41"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.41.tgz#d0b939d94c1d7bd53d04824af45f1139b8c45615"
-  integrity sha512-dueRKfaJL4RTtSa7bWeTK1M+VH+Gns73oCgzvYfHZywRCoPSd8EkXBL0mZ9unPTveBn+D9phZBaxuzpwjWkW0g==
+  version "15.0.1"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-15.0.1.tgz#ef34dea0881028d11398be5bf4e856743e3dc35a"
+  integrity sha512-TMkXt0Ck1y0KKsGr9gJtWGjttxlZnnvDtphxUOSd0bfaR6Q1jle+sPvrzNR1urqYTWMinoKvjKfXUGsumaO1PA==
 
 "@types/node@^14.14.37":
   version "14.14.43"
@@ -115,10 +115,10 @@ acorn@^7.4.0:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.4.1.tgz#feaed255973d2e77555b83dbc08851a6c63520fa"
   integrity sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==
 
-acorn@^8.1.1:
-  version "8.1.1"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.1.1.tgz#fb0026885b9ac9f48bac1e185e4af472971149ff"
-  integrity sha512-xYiIVjNuqtKXMxlRMDc6mZUhXehod4a3gbZ1qRlM7icK4EbxUFNLhWoPblCvFtB2Y9CIqHP3CF/rdxLItaQv8g==
+acorn@^8.2.1:
+  version "8.2.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.2.1.tgz#0d36af126fb6755095879c1dc6fd7edf7d60a5fb"
+  integrity sha512-z716cpm5TX4uzOzILx8PavOE6C6DKshHDw1aQN52M/yNSqE9s5O8SMfyhCCfCJ3HmTL0NkVOi+8a/55T7YB3bg==
 
 ajv@^6.10.0, ajv@^6.12.4:
   version "6.12.6"
@@ -131,9 +131,9 @@ ajv@^6.10.0, ajv@^6.12.4:
     uri-js "^4.2.2"
 
 ajv@^8.0.1:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.1.0.tgz#45d5d3d36c7cdd808930cc3e603cf6200dbeb736"
-  integrity sha512-B/Sk2Ix7A36fs/ZkuGLIR86EdjbgR6fsAcbx9lOP/QBSXujDNbVmIS/U4Itz5k8fPFDeVZl/zQ/gJW4Jrq6XjQ==
+  version "8.2.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.2.0.tgz#c89d3380a784ce81b2085f48811c4c101df4c602"
+  integrity sha512-WSNGFuyWd//XO8n/m/EaOlNLtO0yL8EXT/74LqT4khdhpZjP7lkj/kT5uwRmGitKEVp/Oj7ZUHeGfPtgHhQ5CA==
   dependencies:
     fast-deep-equal "^3.1.1"
     json-schema-traverse "^1.0.0"
@@ -512,10 +512,10 @@ eslint-visitor-keys@^2.0.0:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-2.0.0.tgz#21fdc8fbcd9c795cc0321f0563702095751511a8"
   integrity sha512-QudtT6av5WXels9WjIM7qz1XD1cWGvX4gGXvp/zBn9nXG02D0utdU3Em2m/QjTnrsk6bBjmCygl3rmj118msQQ==
 
-eslint@^7.24.0:
-  version "7.24.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.24.0.tgz#2e44fa62d93892bfdb100521f17345ba54b8513a"
-  integrity sha512-k9gaHeHiFmGCDQ2rEfvULlSLruz6tgfA8DEn+rY9/oYPFFTlz55mM/Q/Rij1b2Y42jwZiK3lXvNTw6w6TXzcKQ==
+eslint@^7.25.0:
+  version "7.25.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.25.0.tgz#1309e4404d94e676e3e831b3a3ad2b050031eb67"
+  integrity sha512-TVpSovpvCNpLURIScDRB6g5CYu/ZFq9GfX2hLNIV4dSBKxIWojeDODvYl3t0k0VtMxYeR8OXPCFE5+oHMlGfhw==
   dependencies:
     "@babel/code-frame" "7.12.11"
     "@eslint/eslintrc" "^0.4.0"
@@ -834,9 +834,9 @@ is-callable@^1.1.3, is-callable@^1.1.4, is-callable@^1.2.3:
   integrity sha512-J1DcMe8UYTBSrKezuIUTUwjXsho29693unXM2YhJUTR2txK/eG47bvNa/wipPFmZFgr/N6f1GA66dv0mEyTIyQ==
 
 is-core-module@^2.2.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/is-core-module/-/is-core-module-2.2.0.tgz#97037ef3d52224d85163f5597b2b63d9afed981a"
-  integrity sha512-XRAfAdyyY5F5cOXn7hYQDqh2Xmii+DEfIcQGxK/uNwMHhIkPWO0g8msXcbzLe+MpGoR951MlqM/2iIlU4vKDdQ==
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/is-core-module/-/is-core-module-2.3.0.tgz#d341652e3408bca69c4671b79a0954a3d349f887"
+  integrity sha512-xSphU2KG9867tsYdLD4RWQ1VqdFl4HTO9Thf3I/3dLEfr0dbPTWKsuCKrgqMljg4nPE+Gq0VCnzT3gr0CyBmsw==
   dependencies:
     has "^1.0.3"
 
@@ -1425,9 +1425,9 @@ table-layout@^1.0.1:
     wordwrapjs "^4.0.0"
 
 table@^6.0.4:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/table/-/table-6.4.0.tgz#9501324358c313162cf52b2843a8b221e75fbefc"
-  integrity sha512-/Vfr23BDjJT2kfsCmYtnJqEPdD/8Dh/MDIQxfcbe+09lZUel6gluquwdMTrLERBw623Nv34DLGZ11krWn5AAqw==
+  version "6.6.0"
+  resolved "https://registry.yarnpkg.com/table/-/table-6.6.0.tgz#905654b79df98d9e9a973de1dd58682532c40e8e"
+  integrity sha512-iZMtp5tUvcnAdtHpZTWLPF0M7AgiQsURR2DwmxnJwSy8I3+cY+ozzVvYha3BOLG2TB+L0CqjIz+91htuj6yCXg==
   dependencies:
     ajv "^8.0.1"
     lodash.clonedeep "^4.5.0"
@@ -1435,6 +1435,7 @@ table@^6.0.4:
     lodash.truncate "^4.4.2"
     slice-ansi "^4.0.0"
     string-width "^4.2.0"
+    strip-ansi "^6.0.0"
 
 tape@^5.2.2:
   version "5.2.2"
@@ -1460,9 +1461,9 @@ tape@^5.2.2:
     through "^2.3.8"
 
 terser@^5.0.0:
-  version "5.6.1"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-5.6.1.tgz#a48eeac5300c0a09b36854bf90d9c26fb201973c"
-  integrity sha512-yv9YLFQQ+3ZqgWCUk+pvNJwgUTdlIxUk1WTN+RnaFJe2L7ipG2csPT0ra2XRm7Cs8cxN7QXmK1rFzEwYEQkzXw==
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-5.7.0.tgz#a761eeec206bc87b605ab13029876ead938ae693"
+  integrity sha512-HP5/9hp2UaZt5fYkuhNBR8YyRcT8juw8+uFbAme53iN9hblvKnLUTKkmwJG6ocWpIKf8UK4DoeWG4ty0J6S6/g==
   dependencies:
     commander "^2.20.0"
     source-map "~0.7.2"