diff --git a/var/spack/repos/builtin/packages/amr-wind/package.py b/var/spack/repos/builtin/packages/amr-wind/package.py
index c5e0debf96f..fbb66f6435e 100644
--- a/var/spack/repos/builtin/packages/amr-wind/package.py
+++ b/var/spack/repos/builtin/packages/amr-wind/package.py
@@ -194,4 +194,7 @@ def cmake_args(self):
                 ),
             )
 
+        if spec.satisfies("+openfast"):
+            args.append(define("AMR_WIND_OPENFAST_VERSION", spec["openfast"].version))
+
         return args
diff --git a/var/spack/repos/builtin/packages/openfast/package.py b/var/spack/repos/builtin/packages/openfast/package.py
index 1f37621562f..5feb3ea11e3 100644
--- a/var/spack/repos/builtin/packages/openfast/package.py
+++ b/var/spack/repos/builtin/packages/openfast/package.py
@@ -17,6 +17,8 @@ class Openfast(CMakePackage):
 
     version("develop", branch="dev")
     version("master", branch="main")
+    version("4.0.0", tag="v4.0.0")
+    version("3.5.5", tag="v3.5.5")
     version("3.5.4", tag="v3.5.4")
     version("3.5.3", tag="v3.5.3")
     version("3.4.1", tag="v3.4.1")