diff --git a/build.sh b/build.sh
index 10115c2..bb23149 100755
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 
 set -eu
 
-MIMALLOC_VERSION=2.1.4
+MIMALLOC_VERSION=2.1.6
 
 cd /tmp