diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7d6426b..6e58f1c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,7 +1,16 @@
 name: CI
 
-on: [push]
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    # Run monthly on the 1st at midnight UTC to test with latest pixi
+    - cron: '0 0 1 * *'
 
 jobs:
   run-slater-gpu:
     uses: ./.github/workflows/slater-gpu-base.yml
+    with:
+      use-latest-pixi: ${{ github.event_name == 'schedule' }}
diff --git a/.github/workflows/slater-gpu-base.yml b/.github/workflows/slater-gpu-base.yml
index 17bd1a8..77771aa 100644
--- a/.github/workflows/slater-gpu-base.yml
+++ b/.github/workflows/slater-gpu-base.yml
@@ -1,24 +1,48 @@
 name: SlaterGPU Base
 
-on: [workflow_call]
+on:
+  workflow_call:
+    inputs:
+      use-latest-pixi:
+        type: boolean
+        default: false
 
 jobs:
   build:
     runs-on: gpu
-    
+
     defaults:
       run:
         shell: bash
     steps:
-    - uses: prefix-dev/setup-pixi@v0.9.1
+    - uses: actions/checkout@v4
+
+    - name: Extract minimum pixi version from pixi.toml
+      id: pixi-version
+      run: |
+        VERSION=$(grep 'requires-pixi' pixi.toml | sed 's/.*>=\([0-9.]*\).*/\1/')
+        echo "version=$VERSION" >> $GITHUB_OUTPUT
+        echo "Using minimum pixi version: $VERSION"
+
+    - name: Set up Pixi (minimum version)
+      if: ${{ !inputs.use-latest-pixi }}
+      uses: prefix-dev/setup-pixi@v0.9.1
       with:
-        pixi-version: v0.54.0
+        pixi-version: v${{ steps.pixi-version.outputs.version }}
         log-level: v
         run-install: false
         # cache: true
       continue-on-error: true
-    - uses: actions/checkout@v4
-    
+
+    - name: Set up Pixi (latest version for scheduled builds)
+      if: ${{ inputs.use-latest-pixi }}
+      uses: prefix-dev/setup-pixi@v0.9.1
+      with:
+        log-level: v
+        run-install: false
+        # cache: true
+      continue-on-error: true
+
     # Cache NVHPC installation
     - name: Cache NVHPC
       id: cache-nvhpc
@@ -28,14 +52,14 @@ jobs:
           /home/runner/work/Linux_x86_64
           /home/runner/work/modulefiles
         key: nvhpc-25.1-cuda-12.6-v1-${{ runner.os }}
-        
+
     - name: Install nvhpc
       run: |
         source .github/workflows/install_nvhpc.sh
       env:
         CACHE_HIT: ${{ steps.cache-nvhpc.outputs.cache-hit }}
       continue-on-error: true
-      
+
     - name: Install and test SlaterGPU
       run: |
         source ~/.pixi/envs/environment-modules/init/bash
diff --git a/pixi.lock b/pixi.lock
index 0ccb010..fc1d13e 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -15,7 +15,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/linux-64/libgcc-ng-15.2.0-h69a702a_16.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/libgomp-15.2.0-he0feb66_16.conda
       - conda: .
-        subdir: linux-64
+        build: hb0f4dca_0
       linux-aarch64:
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/_openmp_mutex-4.5-2_gnu.tar.bz2
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/libcint-5.3.0-h0037855_0.conda
@@ -23,7 +23,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/libgcc-ng-15.2.0-he9431aa_16.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/libgomp-15.2.0-h8acb6b2_16.conda
       - conda: .
-        subdir: linux-aarch64
+        build: he8cfe8b_0
   pytest:
     channels:
     - url: https://conda.anaconda.org/nvidia/
@@ -75,7 +75,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/noarch/tzdata-2025c-hc9c84f9_1.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/zstd-1.5.7-hb78ec9c_6.conda
       - conda: .
-        subdir: linux-64
+        build: hb0f4dca_0
       linux-aarch64:
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/_openmp_mutex-4.5-2_gnu.tar.bz2
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/bzip2-1.0.8-h4777abc_8.conda
@@ -119,7 +119,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/noarch/tzdata-2025c-hc9c84f9_1.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/zstd-1.5.7-h85ac4a6_6.conda
       - conda: .
-        subdir: linux-aarch64
+        build: he8cfe8b_0
 packages:
 - conda: https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2
   sha256: fe51de6107f9edc7aa4f786a70f4a883943bc9d39b3bb7307c04c41410990726
@@ -877,17 +877,19 @@ packages:
 - conda: .
   name: slatergpu
   version: 0.1.14
-  build: hbf21a9e_0
+  build: hb0f4dca_0
   subdir: linux-64
-  variants: {}
+  variants:
+    target_platform: linux-64
   depends:
   - libcint >=5.3,<5.4.0a0
 - conda: .
   name: slatergpu
   version: 0.1.14
-  build: hbf21a9e_0
+  build: he8cfe8b_0
   subdir: linux-aarch64
-  variants: {}
+  variants:
+    target_platform: linux-aarch64
   depends:
   - libcint >=5.3,<5.4.0a0
 - conda: https://conda.anaconda.org/conda-forge/linux-64/tk-8.6.13-noxft_ha0e22de_103.conda
diff --git a/pixi.toml b/pixi.toml
index b8d5f08..a4ac406 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -2,7 +2,7 @@
 channels = ["nvidia", "conda-forge"]
 platforms = ["linux-64", "linux-aarch64"]
 preview = ["pixi-build"]
-requires-pixi = ">=0.54"
+requires-pixi = ">=0.60.0"
 
 [package]
 name = "slatergpu"
@@ -10,7 +10,7 @@ version = "0.1.14"
 
 [package.build.backend]
 name = "pixi-build-cmake"
-version = "==0.3.4"
+version = ">=0.3.6,<=0.3.8"
 
 [package.build.config]
 compilers = []