diff --git a/.gitignore b/.gitignore
index a04443f..3fe5bdf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-/chrony-1.31-pre1.tar.gz
+/chrony-1.31.tar.gz
 /clknetsim-e63178.tar.gz
diff --git a/chrony.spec b/chrony.spec
index 223fbe1..a19e241 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -1,5 +1,4 @@
 %global _hardened_build 1
-%global prerelease -pre1
 %global clknetsim_ver e63178
 %bcond_without debug
 
@@ -53,6 +52,9 @@ clocks, system real-time clock or manual input as time references.
 sed -e 's|VENDORZONE\.|%{vendorzone}|' < %{SOURCE1} > chrony.conf
 touch -r %{SOURCE1} chrony.conf
 
+# regenerate the file from getdate.y
+rm -f getdate.c
+
 mv clknetsim test/simulation
 
 %build
@@ -61,7 +63,7 @@ mv clknetsim test/simulation
         --docdir=%{_docdir} \
         --with-user=chrony \
         --with-sendmail=%{_sbindir}/sendmail
-make %{?_smp_mflags} getdate all docs
+make %{?_smp_mflags} all docs
 
 %install
 make install install-docs DESTDIR=$RPM_BUILD_ROOT
diff --git a/sources b/sources
index 28ed17a..d8f4d59 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-49ef0d5c318591e90e99b4c1e35e11f6  chrony-1.31-pre1.tar.gz
+04ab702fc81150db06809562a9aaed92  chrony-1.31.tar.gz
 810ec170d1accbd526d37ec159d5921b  clknetsim-e63178.tar.gz