diff --git a/_constraints b/_constraints
index d65e17b..104240c 100644
--- a/_constraints
+++ b/_constraints
@@ -55,7 +55,7 @@
     </conditions>
     <hardware>
       <disk>
-         <size unit="G">28</size>
+         <size unit="G">42</size>
       </disk>
       <memory>
          <size unit="G">9</size>
@@ -115,7 +115,7 @@
     </conditions>
     <hardware>
       <disk>
-         <size unit="G">28</size>
+         <size unit="G">42</size>
       </disk>
       <memory>
          <size unit="G">8</size>
diff --git a/ceph-test.changes b/ceph-test.changes
index 59cf85e..9b8a7ec 100644
--- a/ceph-test.changes
+++ b/ceph-test.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Apr 13 09:10:55 UTC 2021 - Nathan Cutler <ncutler@suse.com>
+
+- _constraints: raise s390x disk constraint to 42G after seeing a build fail
+  with "write error: No space left on device"
+
 -------------------------------------------------------------------
 Thu Apr  8 12:48:11 UTC 2021 - Nathan Cutler <ncutler@suse.com>
 
diff --git a/ceph.changes b/ceph.changes
index 59cf85e..9b8a7ec 100644
--- a/ceph.changes
+++ b/ceph.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Apr 13 09:10:55 UTC 2021 - Nathan Cutler <ncutler@suse.com>
+
+- _constraints: raise s390x disk constraint to 42G after seeing a build fail
+  with "write error: No space left on device"
+
 -------------------------------------------------------------------
 Thu Apr  8 12:48:11 UTC 2021 - Nathan Cutler <ncutler@suse.com>