diff --git a/srcpkgs/maturin/template b/srcpkgs/maturin/template
index 26dee81cdb7..c8863f56181 100644
--- a/srcpkgs/maturin/template
+++ b/srcpkgs/maturin/template
@@ -16,6 +16,8 @@ checksum=605cfe879c68295eedcf0e874676c469dab34f293d58c496ad9c99e64da9cc0e
 # Tests use unstable features and fail to build
 make_check=no
 
+export CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
+
 if [ "$CROSS_BUILD" ]; then
 	makedepends+=" rust-std"
 fi