diff --git a/.github/workflows/spack_default_build.yaml b/.github/workflows/spack_default_build.yaml
index fcdb28c9..72dbc9b5 100644
--- a/.github/workflows/spack_default_build.yaml
+++ b/.github/workflows/spack_default_build.yaml
@@ -7,7 +7,7 @@ env:
   # Our repo name contains upper case characters, so we can't use ${{ github.repository }}
   IMAGE_NAME: gridkit
   USERNAME: gridkit-bot
-  BASE_VERSION: ubuntu-24.04-fortran-v0.2.11
+  BASE_VERSION: ubuntu-24.04-fortran-v0.2.13
 
 # Until we remove the need to clone submodules to build, this should on be in PRs
 on: [pull_request]
@@ -134,7 +134,7 @@ jobs:
                 padded_length: 128
             mirrors:
               local-buildcache: oci://${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-              spack: https://binaries.spack.io/v0.23.1
+              spack: https://binaries.spack.io/develop
             packages:
               llvm:
                 externals:
@@ -161,7 +161,7 @@ jobs:
         run: spack -e . concretize
 
       - name: Install dependencies
-        run: spack -e . install --no-check-signature --only dependencies
+        run: spack -e . install --no-check-signature --no-cache --fresh --only dependencies
 
       - name: Install package
         run: spack -e . install --keep-stage --no-check-signature --no-cache --fresh
diff --git a/buildsystem/spack/spack b/buildsystem/spack/spack
index 2452bf8b..5c7268c8 160000
--- a/buildsystem/spack/spack
+++ b/buildsystem/spack/spack
@@ -1 +1 @@
-Subproject commit 2452bf8bc7d1c8a80ae9214a037193867d48f77c
+Subproject commit 5c7268c8b7cf6699ff07863a24b1cd51b8f34ad9