diff --git a/spandsp.spec b/spandsp.spec
index 6577f33a..4f842682 100644
--- a/spandsp.spec
+++ b/spandsp.spec
@@ -20,6 +20,7 @@ BuildRequires: libsndfile-devel%{?_isa}
 BuildRequires: doxygen
 BuildRequires: libxslt
 BuildRequires: docbook-style-xsl
+BuildRequires: autoconf automake libtool
 
 %description
 SpanDSP is a library of DSP functions for telephony, in the 8000