diff --git a/spack.sh b/spack.sh
index e166d004bf54cc26b6d613ef1af4b182514f2b04..213d3200906de4a57ae26749f5ddaa680c818a81 100644
--- a/spack.sh
+++ b/spack.sh
@@ -25,6 +25,7 @@ c07ddf83c32b7129247fe90eed486dd844047087
 64cf67822471ec2d3df2625a6d713f80cbe7ff43
 7a0c4e8017033430e5f15ed628be6b539e935ba9
 48fcfda1e7c1781cab4cada6d099823b263ab0cc
+1255620a14afa3ad4aad681a847a3a1704141976
 ---
 ## Ref: https://github.com/spack/spack/commit/[hash]
 ## [hash]: [description]
@@ -45,3 +46,4 @@ c07ddf83c32b7129247fe90eed486dd844047087
 ## 64cf67822471ec2d3df2625a6d713f80cbe7ff43: py-torch: move patch before def patch
 ## 7a0c4e8017033430e5f15ed628be6b539e935ba9: acts: new versions 31.*
 ## 48fcfda1e7c1781cab4cada6d099823b263ab0cc: setup-env.sh: if exe contains qemu, use /proc/$$/comm instead
+## 1255620a14afa3ad4aad681a847a3a1704141976: Fix infinite recursion when computing concretization errors