diff --git a/ext/iphreeqc b/ext/iphreeqc
index 749fdbc2e..e6e5e0d51 160000
--- a/ext/iphreeqc
+++ b/ext/iphreeqc
@@ -1 +1 @@
-Subproject commit 749fdbc2e9478046bf3f270c70e5800637246712
+Subproject commit e6e5e0d5156c093241a53e6ce074ef346d64ae26