diff --git a/openssl-sys/build.rs b/openssl-sys/build.rs
index 2f1877b4..317b8a6a 100644
--- a/openssl-sys/build.rs
+++ b/openssl-sys/build.rs
@@ -264,6 +264,8 @@ fn validate_headers(include_dirs: &[PathBuf]) -> Version {
 RUST_LIBRESSL_NEW
 #elif LIBRESSL_VERSION_NUMBER >= 0x20600000
 RUST_LIBRESSL_260
+#elif LIBRESSL_VERSION_NUMBER >= 0x20506000
+RUST_LIBRESSL_NEW
 #elif LIBRESSL_VERSION_NUMBER >= 0x20505000
 RUST_LIBRESSL_255
 #elif LIBRESSL_VERSION_NUMBER >= 0x20504000