diff --git a/.github/workflows/rust.yaml b/.github/workflows/rust.yaml
index 1d676b6..f2b222c 100644
--- a/.github/workflows/rust.yaml
+++ b/.github/workflows/rust.yaml
@@ -88,7 +88,7 @@ jobs:
     name: Test MSRV for `ibc` libraries
     timeout-minutes: 30
     env:
-      CARGO_MSRV_VERSION: 0.16.2
+      CARGO_MSRV_VERSION: 0.16.3
       MSRV: 1.75.0
     strategy:
       matrix: