diff --git a/src/passes/4-typer-new/dune b/src/passes/4-typer-new/dune
index 529c6b3ec..645a7053f 100644
--- a/src/passes/4-typer-new/dune
+++ b/src/passes/4-typer-new/dune
@@ -7,7 +7,7 @@
     ast_simplified
     ast_typed
     operators
-    partition
+    UnionFind
   )
   (preprocess
     (pps ppx_let)
diff --git a/vendors/UnionFind/partition.opam b/vendors/UnionFind/UnionFind.opam
similarity index 100%
rename from vendors/UnionFind/partition.opam
rename to vendors/UnionFind/UnionFind.opam
diff --git a/vendors/UnionFind/dune b/vendors/UnionFind/dune
index ca32861e8..13ad33239 100644
--- a/vendors/UnionFind/dune
+++ b/vendors/UnionFind/dune
@@ -1,6 +1,6 @@
 (library
   (name UnionFind)
-  (public_name partition)
+  (public_name UnionFind)
   (wrapped false)
   (modules Partition0 Partition1 Partition2 Partition3 Partition UnionFind)
   (modules_without_implementation Partition))