diff --git a/codec2.spec b/codec2.spec
index aefae09..dc42b55 100644
--- a/codec2.spec
+++ b/codec2.spec
@@ -12,6 +12,7 @@ Source0:        https://github.com/drowe67/codec2/archive/v%{version}/%{name}-%{
 BuildRequires:  gcc
 BuildRequires:  cmake%{?rhel:3}
 BuildRequires:  libsamplerate-devel
+BuildRequires:  lpcnetfreedv-devel
 BuildRequires:  speex-devel
 %if ! 0%{?rhel} < 8
 BuildRequires:  speexdsp-devel