diff --git a/hashes/isl-0.26.tar.bz2.sha1 b/hashes/isl-0.26.tar.bz2.sha1
new file mode 100644
index 0000000..5d1f1e6
--- /dev/null
+++ b/hashes/isl-0.26.tar.bz2.sha1
@@ -0,0 +1 @@
+7b6c2ed0d14a18214dccfffdcb12f277158e70d9  isl-0.26.tar.bz2