diff --git a/var/spack/repos/builtin/packages/spectre/package.py b/var/spack/repos/builtin/packages/spectre/package.py
index c6bc7f76595..1f9c0f167cb 100644
--- a/var/spack/repos/builtin/packages/spectre/package.py
+++ b/var/spack/repos/builtin/packages/spectre/package.py
@@ -31,6 +31,9 @@ class Spectre(CMakePackage):
     license("MIT")
 
     version("develop", branch="develop")
+    version(
+        "2024.09.29", sha256="b5e84b4564ad7cd2e069a24c6c472aab342753fe8393242eceba378b52226acb"
+    )
     version(
         "2024.08.03", sha256="18582b625b121c16cd9a1ec421c4ac6cb77bb252622a205b038306e75a466138"
     )