diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 622f30f..bfc30e4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ on:
     - master
 
 env:
-  R2V: 5.6.4
+  R2V: 5.6.6
 
 jobs:
   linux: