diff --git a/gnupg2.spec b/gnupg2.spec
index 05e1b5d..8c202f3 100644
--- a/gnupg2.spec
+++ b/gnupg2.spec
@@ -54,6 +54,7 @@ BuildRequires: gnutls-devel
 BuildRequires: sqlite-devel
 BuildRequires: fuse
 BuildRequires: make
+BuildRequires: tpm2-tss-devel
 # for tests
 BuildRequires: openssh-clients
 
@@ -133,6 +134,7 @@ sed -i -e 's/"libpcsclite\.so"/"%{pcsclib}"/' scd/scdaemon.c
   --disable-rpath \
   --enable-g13 \
   --disable-ccid-driver \
+  --with-tss=intel \
   --enable-large-secmem
 
 # need scratch gpg database for tests