diff --git a/c/Cargo.toml b/c/Cargo.toml
index 43796b4e..b5536169 100644
--- a/c/Cargo.toml
+++ b/c/Cargo.toml
@@ -33,3 +33,4 @@ simd = ["brotli/simd"]
 std = ["brotli/std"]
 validation = ["brotli/validation"]
 vector_scratch_space = ["brotli/vector_scratch_space"]
+portable-float = ["brotli/portable-float"]