diff --git a/build/pkgs/conway_polynomials/dependencies b/build/pkgs/conway_polynomials/dependencies
index 6b134137610..78d6ec8d5a7 100644
--- a/build/pkgs/conway_polynomials/dependencies
+++ b/build/pkgs/conway_polynomials/dependencies
@@ -1,4 +1,4 @@
-| $(PYTHON)
+| $(PYTHON_TOOLCHAIN) $(PYTHON)
 
 ----------
 All lines of this file are ignored except the first.