diff --git a/.github/workflows/regressiontests.yml b/.github/workflows/regressiontests.yml
index 703ba849..631a82ab 100644
--- a/.github/workflows/regressiontests.yml
+++ b/.github/workflows/regressiontests.yml
@@ -17,7 +17,9 @@ jobs:
   regression_tests:
     name: "Test: ${{ matrix.taskdir }}"
     timeout-minutes: 1440
-    runs-on: self-hosted
+    runs-on: gpuagrohr-01
+    container:
+      image: ubuntu:22.04
     defaults:
       run:
         shell: bash -el {0}
@@ -29,13 +31,15 @@ jobs:
           - NIH3T3
           - GOWT1-1
           - GOWT1-2
-          - BBBC039
 
     steps:
 
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Clear cache  # otherwise corrupted packages can be reported sometimes
+        run: rm -rf /github/home/conda_pkgs_dir
+
       - name: Setup Miniconda
         uses: conda-incubator/setup-miniconda@v2
         with:
diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 5148e077..31c946a5 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -16,7 +16,9 @@ jobs:
 
   run_testsuite:
     name: Test suite
-    runs-on: self-hosted
+    runs-on: gpuagrohr-01
+    container:
+      image: ubuntu:22.04
     defaults:
       run:
         shell: bash -el {0}
@@ -26,6 +28,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Clear cache  # otherwise corrupted packages can be reported sometimes
+        run: rm -rf /github/home/conda_pkgs_dir
+
       - name: Setup Miniconda
         uses: conda-incubator/setup-miniconda@v2
         with:
diff --git a/.github/workflows/validate_pr.yml b/.github/workflows/validate_pr.yml
index 55a484a3..86036ea1 100644
--- a/.github/workflows/validate_pr.yml
+++ b/.github/workflows/validate_pr.yml
@@ -19,10 +19,17 @@ jobs:
 
   validate_conditional_checks:
     name: Validate conditional checks
-    runs-on: ubuntu-latest
     timeout-minutes: 1440
+    runs-on: gpuagrohr-02
+    container:
+      image: ubuntu:22.04
 
     steps:
+
+      - name: Install dependencies
+        run: |
+          apt-get update
+          apt-get install -y ca-certificates
     
       - uses: blend/require-conditional-status-checks@2022.02.04
         with:
@@ -57,13 +64,6 @@ jobs:
                 - examples/**
                 - superdsm.yml
                 - tests/regression
-            - job: 'Test: BBBC039'
-              paths:
-                - .github/workflows/regressiontests.yml
-                - superdsm/**
-                - examples/**
-                - superdsm.yml
-                - tests/regression
             - job: 'Test suite'
               paths:
                 - .github/workflows/testsuite.yml
diff --git a/superdsm.yml b/superdsm.yml
index 83265cbf..dd3ff56e 100644
--- a/superdsm.yml
+++ b/superdsm.yml
@@ -18,7 +18,7 @@ dependencies:
 - brunsli=0.1=h9c3ff4c_0
 - bzip2=1.0.8=hd590300_5
 - c-ares=1.26.0=hd590300_0
-- c-blosc2=2.13.2=hb4ffafa_0
+- c-blosc2=2
 - ca-certificates=2024.2.2=hbcca054_0
 - certifi=2024.2.2=pyhd8ed1ab_0
 - cfitsio=4.1.0=hd9d235c_0