diff --git a/sau/gentoo.py b/sau/gentoo.py
index 145b2ac..276484d 100644
--- a/sau/gentoo.py
+++ b/sau/gentoo.py
@@ -151,7 +151,7 @@ def pkg_upgrade():
         return False
 
     cmd = [ EMERGE_PATH, '--color', 'n', '-uDNq', '@world' ]
-    ret, out, err = sau.helpers.exec_cmd(cmd, timeout=36000)
+    ret, out, err = sau.helpers.exec_cmd(cmd, timeout=72000)
 
     if ret != 0 or err:
         log.warning('emerge returned {}'.format(ret))
@@ -166,7 +166,7 @@ def pkg_upgrade():
                 log.warning(line)
 
     cmd = [ EMERGE_PATH, '--color', 'n', '-q', '@preserved-rebuild' ]
-    ret, out, err = sau.helpers.exec_cmd(cmd, timeout=36000)
+    ret, out, err = sau.helpers.exec_cmd(cmd, timeout=72000)
 
     if ret != 0 or err:
         log.warning('preserved-rebuild returned {}'.format(ret))