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/git-annex.changes b/git-annex.changes
index 01feadb..a91c42e 100644
--- a/git-annex.changes
+++ b/git-annex.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Sep 15 14:54:15 UTC 2020 - Michel Normand <normand@linux.vnet.ibm.com>
+
+- Add _constraints 4GB min disk space
+
 -------------------------------------------------------------------
 Wed Sep  9 02:00:54 UTC 2020 - psimons@suse.com