diff --git a/frontend/pnpm-lock.yaml b/frontend/pnpm-lock.yaml
index 8452145a..84149ac6 100644
--- a/frontend/pnpm-lock.yaml
+++ b/frontend/pnpm-lock.yaml
@@ -66,7 +66,7 @@ dependencies:
     version: 0.94.1
   slate-automerge-doc:
     specifier: github:bugbakery/slate-automerge-doc
-    version: github.com/bugbakery/slate-automerge-doc/17b57f8481356f7025775ed46ded556a9aa6ea87(slate@0.94.1)
+    version: github.com/bugbakery/slate-automerge-doc/ddeccfc36cad1e96941d68e29633f656df3c1481(slate@0.94.1)
   slate-history:
     specifier: ^0.93.0
     version: 0.93.0(slate@0.94.1)
@@ -6225,11 +6225,13 @@ packages:
     requiresBuild: true
     dev: false
 
-  github.com/bugbakery/slate-automerge-doc/17b57f8481356f7025775ed46ded556a9aa6ea87(slate@0.94.1):
-    resolution: {tarball: https://codeload.github.com/bugbakery/slate-automerge-doc/tar.gz/17b57f8481356f7025775ed46ded556a9aa6ea87}
-    id: github.com/bugbakery/slate-automerge-doc/17b57f8481356f7025775ed46ded556a9aa6ea87
+  github.com/bugbakery/slate-automerge-doc/ddeccfc36cad1e96941d68e29633f656df3c1481(slate@0.94.1):
+    resolution: {tarball: https://codeload.github.com/bugbakery/slate-automerge-doc/tar.gz/ddeccfc36cad1e96941d68e29633f656df3c1481}
+    id: github.com/bugbakery/slate-automerge-doc/ddeccfc36cad1e96941d68e29633f656df3c1481
     name: slate-automerge-doc
     version: 0.1.0
+    prepare: true
+    requiresBuild: true
     peerDependencies:
       slate: '>=0.91.0'
     dependencies:
diff --git a/nix/pkgs/frontend.nix b/nix/pkgs/frontend.nix
index 8cda5453..b50e61d8 100644
--- a/nix/pkgs/frontend.nix
+++ b/nix/pkgs/frontend.nix
@@ -33,6 +33,8 @@ stdenv.mkDerivation {
       export NPM_CONFIG_CACHE="$(mktemp -d)"
       export NODE_EXTRA_CA_CERTS="${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
 
+      echo "store-dir = $(mktemp -d)" > .npmrc
+
       pnpm install --frozen-lockfile
 
       ${lib.concatStringsSep "\n" versionExports}