diff --git a/js/package.json b/js/package.json
index 899f1da..654e87c 100644
--- a/js/package.json
+++ b/js/package.json
@@ -45,7 +45,7 @@
     "@perspective-dev/viewer": "^4.3.0",
     "@perspective-dev/viewer-d3fc": "^4.3.0",
     "@perspective-dev/viewer-datagrid": "^4.3.0",
-    "@perspective-dev/workspace": "^4.3.0"
+    "@perspective-dev/workspace": "^4.5.1"
   },
   "devDependencies": {
     "cpy": "^13.2.1",
diff --git a/js/pnpm-lock.yaml b/js/pnpm-lock.yaml
index 35a0388..c638c77 100644
--- a/js/pnpm-lock.yaml
+++ b/js/pnpm-lock.yaml
@@ -24,8 +24,8 @@ importers:
         specifier: ^4.3.0
         version: 4.3.0
       '@perspective-dev/workspace':
-        specifier: ^4.3.0
-        version: 4.3.0
+        specifier: ^4.5.1
+        version: 4.5.1
     devDependencies:
       cpy:
         specifier: ^13.2.1
@@ -353,8 +353,8 @@ packages:
   '@lumino/virtualdom@2.0.4':
     resolution: {integrity: sha512-7MFthA9KUsqZTGm/D98FZt1QupjIGyd3XyB4SIugn6DQAqhjBiyykCZydnRq3qmuMHybQel33dNIbHpzyNyQwA==}
 
-  '@lumino/widgets@2.7.5':
-    resolution: {integrity: sha512-i11PlbTsZYIvC/uhcC4FeeLnu/7vveG8WzXFbxPunjT1yGjleqQIPlpMOAJ5d4PwCKqeM8LYttYke6ZOXvXDLA==}
+  '@lumino/widgets@2.8.0':
+    resolution: {integrity: sha512-mgWcbxxolqC58mpN4HcPKQvZ1AzQFStonsffaIsR4Kor2vRhc7+RFc0hd5VnhgJowvoFmmREQhZW8ETR1ydCVw==}
 
   '@nodelib/fs.scandir@2.1.5':
     resolution: {integrity: sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==}
@@ -371,9 +371,15 @@ packages:
   '@perspective-dev/client@4.3.0':
     resolution: {integrity: sha512-LhVDyYzZrSmtuU04qX+MzpnA1BKPEW9nMi4RPE6y3KiGAWwFFqEFgZKF233U8/Fx3v2URCijcwmXn0qTVfoPMQ==}
 
+  '@perspective-dev/client@4.5.1':
+    resolution: {integrity: sha512-Yb/huLDHEQ9FFeTloipHKM2oVtgTkHLIEqh971eznOc0sNQGg9Sd7flju8xlKe8KMGe3VCo7/wlvxr4GqBi1Bw==}
+
   '@perspective-dev/server@4.3.0':
     resolution: {integrity: sha512-UH3ADscynozVx42RF07DTBmPE/0PUwH+SS0cgvMLuLfBjtvnPm6msfOU0tHlgFnNZOHJO0q6RZ9WI5fD6wF07A==}
 
+  '@perspective-dev/server@4.5.1':
+    resolution: {integrity: sha512-VzR1Z+SdUlB4K1hTHFxVE7PLxFXtTb008fBGMg/uo3Y3qDbJh/9IcZjOwvpI86k6QUZ49VR2w3BDGdh7YzF/8A==}
+
   '@perspective-dev/viewer-d3fc@4.3.0':
     resolution: {integrity: sha512-Su0pcno2RLnzotnMGLBSlLsCL3qE2BSTtso6KcUXFNO+Cbx2jzTo+5hDk+kcZtDYbMpZk/a7p+NoUhltL5qOGA==}
 
@@ -383,8 +389,8 @@ packages:
   '@perspective-dev/viewer@4.3.0':
     resolution: {integrity: sha512-zF2xRqk4DfemMJ0Y1CCFFQKSk6L+v/hcQCPs0jVUs3cwS73bOVRnz1Hl9V3rwpfXSviILS+66d2HIlllvyd2vg==}
 
-  '@perspective-dev/workspace@4.3.0':
-    resolution: {integrity: sha512-sEdeyw0jcPj6l7hCdckDm4KfCP8PuoomLG0/FrMQASKYscMq+Z1RDjo2T+5YJWOezEFCjpJy284YHnr4Vq2guw==}
+  '@perspective-dev/workspace@4.5.1':
+    resolution: {integrity: sha512-9hVsVHu6sKwRQkP2ChmIlI/W6ieA2Mr49OiSHVSicEw28INbMZgaEU/Pn21pIsg0S+VOgxcu/b07f37GajSecA==}
 
   '@sindresorhus/merge-streams@4.0.0':
     resolution: {integrity: sha512-tlqY9xq5ukxTUZBmoOp+m61cqwQD5pHJtFY3Mn8CA8ps6yghLH/Hw8UPdqg4OLmFW3IFlcXnQNmo/dh8HzXYIQ==}
@@ -1460,6 +1466,18 @@ packages:
       utf-8-validate:
         optional: true
 
+  ws@8.21.0:
+    resolution: {integrity: sha512-Vsp28b7DRcimFQvrqu2Wek3z1iYxDCWqHYB8Qsnk/S4RfaCQzPGPyBNuVjJV3cd6UiKtUtp6sNM77gWvzcCH+g==}
+    engines: {node: '>=10.0.0'}
+    peerDependencies:
+      bufferutil: ^4.0.1
+      utf-8-validate: '>=5.0.2'
+    peerDependenciesMeta:
+      bufferutil:
+        optional: true
+      utf-8-validate:
+        optional: true
+
   zx@8.8.5:
     resolution: {integrity: sha512-SNgDF5L0gfN7FwVOdEFguY3orU5AkfFZm9B5YSHog/UDHv+lvmd82ZAsOenOkQixigwH2+yyH198AwNdKhj+RA==}
     engines: {node: '>= 12.17.0'}
@@ -1725,7 +1743,7 @@ snapshots:
     dependencies:
       '@lumino/algorithm': 2.0.4
 
-  '@lumino/widgets@2.7.5':
+  '@lumino/widgets@2.8.0':
     dependencies:
       '@lumino/algorithm': 2.0.4
       '@lumino/commands': 2.3.3
@@ -1763,8 +1781,22 @@ snapshots:
       - supports-color
       - utf-8-validate
 
+  '@perspective-dev/client@4.5.1':
+    dependencies:
+      '@perspective-dev/server': 4.5.1
+      pro_self_extracting_wasm: 0.0.9
+      stoppable: 1.1.0
+      ws: 8.21.0
+    transitivePeerDependencies:
+      - bufferutil
+      - debug
+      - supports-color
+      - utf-8-validate
+
   '@perspective-dev/server@4.3.0': {}
 
+  '@perspective-dev/server@4.5.1': {}
+
   '@perspective-dev/viewer-d3fc@4.3.0(d3-brush@3.0.0)(d3-dispatch@3.0.1)(d3-fetch@3.0.1)(d3-path@3.1.0)(d3-random@3.0.1)(d3-scale-chromatic@3.1.0)(d3-scale@4.0.2)(d3-shape@3.2.0)(d3-time@3.1.0)(d3-zoom@3.0.0)':
     dependencies:
       '@d3fc/d3fc-chart': 5.1.9(d3-array@3.2.4)(d3-path@3.1.0)(d3-scale-chromatic@3.1.0)(d3-scale@4.0.2)(d3-selection@3.0.0)(d3-shape@3.2.0)
@@ -1817,7 +1849,7 @@ snapshots:
       - supports-color
       - utf-8-validate
 
-  '@perspective-dev/workspace@4.3.0':
+  '@perspective-dev/workspace@4.5.1':
     dependencies:
       '@lumino/algorithm': 2.0.4
       '@lumino/commands': 2.3.3
@@ -1826,8 +1858,8 @@ snapshots:
       '@lumino/messaging': 2.0.4
       '@lumino/signaling': 2.1.5
       '@lumino/virtualdom': 2.0.4
-      '@lumino/widgets': 2.7.5
-      '@perspective-dev/client': 4.3.0
+      '@lumino/widgets': 2.8.0
+      '@perspective-dev/client': 4.5.1
       lodash: 4.18.1
     transitivePeerDependencies:
       - bufferutil
@@ -3134,4 +3166,6 @@ snapshots:
 
   ws@8.20.0: {}
 
+  ws@8.21.0: {}
+
   zx@8.8.5: {}