diff --git a/tpm2-0-tss.changes b/tpm2-0-tss.changes
index b6c9fc5..26e99ba 100644
--- a/tpm2-0-tss.changes
+++ b/tpm2-0-tss.changes
@@ -7,6 +7,7 @@ Thu Feb 22 09:41:46 UTC 2018 - matthias.gerstner@suse.com
   - various stability bugfixes
   - EncryptDecrypt2 command is now implemented
 - removed reproducable.patch. This is now included upstream.
+- added version_fix.patch to fix package config version numbers.
 
 -------------------------------------------------------------------
 Fri Sep  1 14:27:33 UTC 2017 - matthias.gerstner@suse.com
diff --git a/tpm2-0-tss.spec b/tpm2-0-tss.spec
index 3ef9c84..a01530d 100644
--- a/tpm2-0-tss.spec
+++ b/tpm2-0-tss.spec
@@ -25,6 +25,7 @@ Group:          Productivity/Security
 Url:            https://github.com/tpm2-software/tpm2-tss
 Source0:        https://github.com/tpm2-software/tpm2-tss/archive/%{version}.tar.gz
 Source2:        baselibs.conf
+Patch0:         version_fix.patch
 # PATCH-FIX-UPSTREAM bmwiedemann https://github.com/01org/TPM2.0-TSS/pull/419
 BuildRequires:  autoconf-archive
 BuildRequires:  automake
@@ -82,6 +83,14 @@ TPM over a socket.
 
 %prep
 %setup -q -n tpm2-tss-%{version}
+# TODO: XX:
+# this fixes the autoconf version number which is determined via git and
+# doesn't work in OBS. The distribution tarball may fix this in the future for
+# us. If we don'T do this then the pkg-config *.pc files don't contain a
+# version number and dependent packages like tpm2.0-tools fail to build.
+#
+# the version number needs to be fixed with each version change!
+%patch0 -p1
 
 %build
 # we are still using the source tarball here. there is a release tarball for
diff --git a/version_fix.patch b/version_fix.patch
new file mode 100644
index 0000000..c62fb79
--- /dev/null
+++ b/version_fix.patch
@@ -0,0 +1,11 @@
+Index: tpm2-tss-1.3.0/configure.ac
+===================================================================
+--- tpm2-tss-1.3.0.orig/configure.ac
++++ tpm2-tss-1.3.0/configure.ac
+@@ -1,5 +1,5 @@
+ AC_INIT([tpm2-tss],
+-        [m4_esyscmd_s([git describe --tags --always --dirty])])
++        [1.3.0])
+ AC_CONFIG_MACRO_DIR([m4])
+ AC_PROG_CC
+ AC_PROG_CXX