diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8bdf61b..71f9f50 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,10 +21,6 @@ jobs:
           ~/.elan/bin/lean --version
           echo "$HOME/.elan/bin" >> $GITHUB_PATH
 
-      - name: Compile doc-gen4
-        run: |
-          lake build
-
       - name: Checkout and compile std4
         run: |
           cd ../
diff --git a/lake-manifest.json b/lake-manifest.json
index 60dd202..f607b57 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -7,6 +7,12 @@
     "rev": "0077cbbaa92abf855fc1c0413e158ffd8195ec77",
     "name": "CMark",
     "inputRev?": "main"}},
+  {"git":
+   {"url": "https://github.com/fgdorais/lean4-unicode-basic",
+    "subDir?": null,
+    "rev": "f09250282cea3ed8c010f430264d9e8e50d7bc32",
+    "name": "lean4-unicode-basic",
+    "inputRev?": "main"}},
   {"git":
    {"url": "https://github.com/mhuisi/lean4-cli",
     "subDir?": null,
@@ -18,10 +24,4 @@
     "subDir?": null,
     "rev": "2447df5cc6e48eb965c3c3fba87e46d353b5e9f1",
     "name": "leanInk",
-    "inputRev?": "doc-gen"}},
-  {"git":
-   {"url": "https://github.com/fgdorais/lean4-unicode-basic",
-    "subDir?": null,
-    "rev": "f09250282cea3ed8c010f430264d9e8e50d7bc32",
-    "name": "UnicodeBasic",
-    "inputRev?": "main"}}]}
+    "inputRev?": "doc-gen"}}]}
diff --git a/lakefile.lean b/lakefile.lean
index 0362a70..48530a7 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -14,7 +14,7 @@ lean_exe «doc-gen4» {
 require CMark from git
   "https://github.com/xubaiw/CMark.lean" @ "main"
 
-require UnicodeBasic from git
+require «lean4-unicode-basic» from git
   "https://github.com/fgdorais/lean4-unicode-basic" @ "main"
 
 require Cli from git
diff --git a/lean-toolchain b/lean-toolchain
index e183d2c..dc4c3b8 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2023-07-30
+leanprover/lean4:nightly-2023-08-03
diff --git a/test_docs.sh b/test_docs.sh
index 8a2579d..387af03 100755
--- a/test_docs.sh
+++ b/test_docs.sh
@@ -5,10 +5,6 @@
 set -e
 set -x
 
-# carry the already built doc-gen4 over
-mkdir -p "$1"/lake-packages
-rsync -av --exclude=".*" "$2"/lake-packages/* "$1"/lake-packages
-
 # generate the docs
 cd "$1"
 sed -i "s|from git \"https://github.com/leanprover/doc-gen4\" @ \"main\"| from \"..\" / \"doc-gen4\" with NameMap.empty|" lakefile.lean