diff --git a/var/spack/repos/builtin/packages/caliper/package.py b/var/spack/repos/builtin/packages/caliper/package.py
index 5cdbadacf9..66bd9cc84c 100644
--- a/var/spack/repos/builtin/packages/caliper/package.py
+++ b/var/spack/repos/builtin/packages/caliper/package.py
@@ -27,6 +27,7 @@ class Caliper(CMakePackage, CudaPackage, ROCmPackage):
 
     version("master", branch="master")
     version("2.10.0", sha256="14c4fb5edd5e67808d581523b4f8f05ace8549698c0e90d84b53171a77f58565")
+    version("2.9.1", sha256="4771d630de505eff9227e0ec498d0da33ae6f9c34df23cb201b56181b8759e9e")
     version("2.9.0", sha256="507ea74be64a2dfd111b292c24c4f55f459257528ba51a5242313fa50978371f")
     version("2.8.0", sha256="17807b364b5ac4b05997ead41bd173e773f9a26ff573ff2fe61e0e70eab496e4")
     version(
@@ -117,7 +118,10 @@ class Caliper(CMakePackage, CudaPackage, ROCmPackage):
     conflicts("+rocm+cuda")
 
     patch("for_aarch64.patch", when="target=aarch64:")
-    patch("sampler-service-missing-libunwind-include-dir.patch", when="@2.9.0 +libunwind +sampler")
+    patch(
+        "sampler-service-missing-libunwind-include-dir.patch",
+        when="@2.9.0:2.9.1 +libunwind +sampler",
+    )
 
     def cmake_args(self):
         spec = self.spec