diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..b5b0790
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,14 @@
+<constraints>
+  <overwrite>
+    <conditions>
+      <arch>ppc64</arch>
+      <arch>ppc64le</arch>
+    </conditions>
+    <hardware>
+    <disk>
+      <size unit="G">6</size>
+    </disk>
+    </hardware>
+  </overwrite>
+</constraints>
+
diff --git a/hledger-interest.changes b/hledger-interest.changes
index 9364edf..b3c4025 100644
--- a/hledger-interest.changes
+++ b/hledger-interest.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Aug 19 07:42:01 UTC 2020 - Michel Normand <normand@linux.vnet.ibm.com>
+
+- Add _constraints with 6GB min disk space for ppc64/ppc64le
+
 -------------------------------------------------------------------
 Tue Aug 18 10:46:51 UTC 2020 - Peter Simons <psimons@suse.com>