diff --git a/_constraints b/_constraints
index b933b77..bdf10b5 100644
--- a/_constraints
+++ b/_constraints
@@ -2,7 +2,7 @@
 <constraints>
   <hardware>
     <disk>
-      <size unit="G">24</size>
+      <size unit="G">25</size>
     </disk>
     <memory>
       <size unit="G">8</size>
diff --git a/firefox-esr.changes b/firefox-esr.changes
index e8e7e0d..27cf3d5 100644
--- a/firefox-esr.changes
+++ b/firefox-esr.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Nov 14 09:51:00 UTC 2019 - Antonio Larrosa <alarrosa@suse.com>
+
+- Increase disk size in _constraints file from 24 to 25 Gb since the
+  build log is showing a "No space left on device" error when checking
+  for unpackaged files in x86_64.
+
 -------------------------------------------------------------------
 Mon Oct 21 13:13:29 UTC 2019 - Wolfgang Rosenauer <wr@rosenauer.org>