diff --git a/debian/rules b/debian/rules
index 0ee2128d7..dc2bd55ac 100755
--- a/debian/rules
+++ b/debian/rules
@@ -14,7 +14,9 @@ export DEB_BUILD_MAINT_OPTIONS=optimize=-lto
 override_dh_auto_configure:
 	ln -s cargo-vendor/vendor vendor
 	ln -s cargo-vendor/.cargo .cargo
-	dh_auto_configure -- -DCMAKE_BUILD_TYPE=RelWithDebInfo
+	dh_auto_configure -- -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+	  -DRust_CARGO=$$(command -v cargo-1.85 || command -v cargo) \
+	  -DRust_COMPILER=$$(command -v rustc-1.85 || command -v rustc)
 
 override_dh_clean:
 	dh_clean --exclude=Cargo.toml.orig