diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..437df64
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<constraints>
+  <hardware>
+    <memory>
+      <size unit="G">4</size>
+    </memory>
+  </hardware>
+  <overwrite>
+    <conditions>
+      <arch>ppc64le</arch>
+      <arch>s390x</arch>
+    </conditions>
+    <hardware>
+      <memory>
+        <size unit="G">5</size>
+      </memory>
+    </hardware>
+  </overwrite>
+</constraints>
diff --git a/gammaray.changes b/gammaray.changes
index 4443ab5..45ac498 100644
--- a/gammaray.changes
+++ b/gammaray.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Oct 28 08:43:13 UTC 2024 - Christophe Marin <christophe@krop.fr>
+
+- Add a _constraints file to fix oom issues when building gammaray
+
 -------------------------------------------------------------------
 Wed Aug 28 13:21:45 UTC 2024 - Christophe Marin <christophe@krop.fr>