diff --git a/nss.pc.in b/nss.pc.in
index 2955e73..dddf868 100644
--- a/nss.pc.in
+++ b/nss.pc.in
@@ -6,5 +6,6 @@ includedir=%includedir%
 Name: NSS
 Description: Network Security Services
 Version: %NSS_VERSION%
+Requires: nspr >= %NSPR_VERSION%
 Libs: -lssl3 -lsmime3 -lnss3
 Cflags: -I${includedir}
diff --git a/nss.spec b/nss.spec
index 6bcb79a..ee6164f 100644
--- a/nss.spec
+++ b/nss.spec
@@ -112,6 +112,7 @@ export USE_64
                           -e "s,%%prefix%%,%{_prefix},g" \
                           -e "s,%%exec_prefix%%,%{_prefix},g" \
                           -e "s,%%includedir%%,%{_includedir}/nss3,g" \
+                          -e "s,%%NSPR_VERSION%%,%{nspr_version},g" > \
                           -e "s,%%NSS_VERSION%%,%{version},g" > \
                           $RPM_BUILD_ROOT/%{_libdir}/pkgconfig/nss.pc
 
@@ -301,6 +302,7 @@ done
 %changelog
 * Thu Dec 15 2005 Christopher Aillon <caillon@redhat.com> 3.11-0.cvs.2
 - Add patch to allow building on ppc*
+- Update the pkgconfig file to Require nspr
 
 * Thu Dec 15 2005 Christopher Aillon <caillon@redhat.com> 3.11-0.cvs
 - Initial import into Fedora Core, based on a CVS snapshot of