diff --git a/.github/workflows/Dependency.yml b/.github/workflows/Dependency.yml
new file mode 100644
index 00000000..3ef7599e
--- /dev/null
+++ b/.github/workflows/Dependency.yml
@@ -0,0 +1,22 @@
+name: Check Dependencies
+
+on: [push, pull_request]
+
+jobs:
+  check_dependencies:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Check for GLMakie and JustPIC dependencies
+        run: |
+          if grep -q "GLMakie" ./Project.toml; then
+            echo "GLMakie dependency found, failing the test."
+            exit 1
+          fi
+          if grep -q "JustPIC" ./Project.toml; then
+            echo "JustPIC dependency found, failing the test."
+            exit 1
+          fi
+          echo "Neither GLMakie nor JustPIC dependencies found."
diff --git a/Project.toml b/Project.toml
index 418efc54..62bc1a7d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -28,7 +28,7 @@ WriteVTK = "64499a7a-5c06-52f2-abe2-ccb03c286192"
 AMDGPU = "0.6, 0.7, 0.8"
 Adapt = "3.7.2"
 CUDA = "4.4.1, 5"
-CellArrays = "0.1 "
+CellArrays = "0.1, 0.2"
 GeoParams = "0.5"
 HDF5 = "0.17.1"
 ImplicitGlobalGrid = "0.14.0, 0.15.0"
diff --git a/src/stokes/Stokes2D.jl b/src/stokes/Stokes2D.jl
index 22163eea..e2bb80f7 100644
--- a/src/stokes/Stokes2D.jl
+++ b/src/stokes/Stokes2D.jl
@@ -496,7 +496,8 @@ function JustRelax.solve!(
     viscosity_cutoff=(1e16, 1e24),
     iterMax=50e3,
     iterMin=1e2,
-    viscosity_relaxation=1e-3,
+    viscosity_relaxation=1e-2,
+    free_surface=false,
     nout=500,
     b_width=(4, 4, 0),
     verbose=true,
@@ -622,7 +623,7 @@ function JustRelax.solve!(
                     ρg...,
                     ητ,
                     _di...,
-                    dt,
+                    dt * free_surface,
                 )
                 # apply boundary conditions
                 flow_bcs!(stokes, flow_bcs)
@@ -644,7 +645,7 @@ function JustRelax.solve!(
                 @stress(stokes)...,
                 ρg...,
                 _di...,
-                dt,
+                dt * free_surface,
             )
             # errs = maximum_mpi.((abs.(stokes.R.Rx), abs.(stokes.R.Ry), abs.(stokes.R.RP)))
             errs = (