diff --git a/shadow.spec b/shadow.spec
index 3562d06..802890c 100644
--- a/shadow.spec
+++ b/shadow.spec
@@ -58,6 +58,8 @@ BuildRequires:  libsemanage-devel
 BuildRequires:  libtool
 BuildRequires:  pam-devel
 BuildRequires:  xz
+# we depend on libbsd or glibc >= 2.38 for the strlcpy() (and readpassphrase()) functions
+BuildRequires:  glibc-devel >= 2.38
 Requires:       login_defs >= %{version}
 Requires(pre):  group(root)
 Requires(pre):  group(shadow)