diff --git a/vendor/source/igraph b/vendor/source/igraph
index 4e04d3943..9d6f7a9d8 160000
--- a/vendor/source/igraph
+++ b/vendor/source/igraph
@@ -1 +1 @@
-Subproject commit 4e04d39438ac03bf177529e754a07b05beb0930b
+Subproject commit 9d6f7a9d8eef9e7be36e03bf22177d093eaf0742