diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..b8e23cb
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,8 @@
+<constraints>
+  <hardware>
+  <disk>
+    <size unit="G">4</size>
+  </disk>
+  </hardware>
+</constraints>
+
diff --git a/dhall-json.changes b/dhall-json.changes
index 729147e..79ae6b6 100644
--- a/dhall-json.changes
+++ b/dhall-json.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Sep 15 15:56:54 UTC 2020 - Michel Normand <normand@linux.vnet.ibm.com>
+
+- Add _constraints with 4GB min disk space
+
 -------------------------------------------------------------------
 Sat Sep 12 16:17:54 UTC 2020 - psimons@suse.com