diff --git a/pyproject.toml b/pyproject.toml
index 1165aeb..97c0352 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,8 +28,9 @@ pysimdjson = { workspace = true }
 
 [[tool.setuptools.ext-modules]]
 name = "csimdjson"
-sources = ["simdjson/simdjson.cpp", "simdjson/util.cpp", "simdjson/csimdjson.pyx"]
+sources = ["simdjson/util.cpp", "simdjson/csimdjson.pyx"]
 define-macros = [["SIMDJSON_IMPLEMENTATION_FALLBACK", "1"]]
+libraries = ["simdjson"]
 
 [tool.setuptools.packages.find]
 include = ["simdjson"]