diff --git a/repos.bzl b/repos.bzl
index 8bcbb48..ce45af1 100644
--- a/repos.bzl
+++ b/repos.bzl
@@ -22,7 +22,7 @@
     if not native.existing_rule("com_google_mpact-sim"):
         http_archive(
             name = "com_google_mpact-sim",
-            sha256 = "2bc5c1ac7873e56891fe2294a6b7b5b005f525a6c313371833a9483721519b47",
-            strip_prefix = "mpact-sim-710f7fa12752f7e0db3eff1fcf657613120a05d1",
-            url = "https://github.com/google/mpact-sim/archive/710f7fa12752f7e0db3eff1fcf657613120a05d1.tar.gz",
+            sha256 = "284a985758c4b2ef8916382462677ca48cad5f3abd31c546bb59332f9373bbc8",
+            strip_prefix = "mpact-sim-97a421b761d180d78f29c0c5b1e23af1e2c90eca",
+            url = "https://github.com/google/mpact-sim/archive/97a421b761d180d78f29c0c5b1e23af1e2c90eca.tar.gz",
         )