diff --git a/var/spack/repos/builtin/packages/r-acme/package.py b/var/spack/repos/builtin/packages/r-acme/package.py
index 3b00ceec379..989ec5abd8e 100644
--- a/var/spack/repos/builtin/packages/r-acme/package.py
+++ b/var/spack/repos/builtin/packages/r-acme/package.py
@@ -21,6 +21,7 @@ class RAcme(RPackage):
 
     bioc = "ACME"
 
+    version("2.56.0", commit="083af1249e67db11fd471babe67b146eb9c1700c")
     version("2.54.0", commit="8d39d9d6623adf427f5eba308790e1de01213870")
     version("2.52.0", commit="14a97c722d0201654af9e583e7e462b458c28a77")
     version("2.50.0", commit="d55a19a8c091e8ea5fd35041520107a7f7603e14")