diff --git a/boring/src/ssl/mod.rs b/boring/src/ssl/mod.rs
index a41706b5..e8af9bbe 100644
--- a/boring/src/ssl/mod.rs
+++ b/boring/src/ssl/mod.rs
@@ -864,6 +864,8 @@ impl CertificateCompressionAlgorithm {
     pub const ZLIB: Self = Self(ffi::TLSEXT_cert_compression_zlib as u16);
 
     pub const BROTLI: Self = Self(ffi::TLSEXT_cert_compression_brotli as u16);
+
+    pub const ZSTD: Self = Self(ffi::TLSEXT_cert_compression_zstd as u16);
 }
 
 /// A standard implementation of protocol selection for Application Layer Protocol Negotiation