diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..6996f8f
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,12 @@
+
+
+
+ riscv64
+
+
+
+ 15
+
+
+
+
diff --git a/alex.changes b/alex.changes
index f823497..9c6d288 100644
--- a/alex.changes
+++ b/alex.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Oct 21 12:51:40 UTC 2020 - Andreas Schwab
+
+- Add memory constraints for riscv64
+
-------------------------------------------------------------------
Tue Aug 18 10:43:42 UTC 2020 - Peter Simons