diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 81328e73..e55e329d 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -26,18 +26,20 @@ jobs:
           - x64
           # - x86
     steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v4
         with:
           files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: false
   docs:
     name: Documentation
     runs-on: ubuntu-latest
diff --git a/src/problem_templates/unitary_minimum_time_problem.jl b/src/problem_templates/unitary_minimum_time_problem.jl
index 13c04156..2b70bb93 100644
--- a/src/problem_templates/unitary_minimum_time_problem.jl
+++ b/src/problem_templates/unitary_minimum_time_problem.jl
@@ -77,15 +77,15 @@ end
 function UnitaryMinimumTimeProblem(
     prob::DirectTrajOptProblem,
     goal::AbstractPiccoloOperator;
-    objective::Objective=prob.objective,
-    constraints::AbstractVector{<:AbstractConstraint}=prob.constraints,
+    objective::Objective=deepcopy(prob.objective),
+    constraints::AbstractVector{<:AbstractConstraint}=deepcopy(prob.constraints),
     kwargs...
 )
     return UnitaryMinimumTimeProblem(
-        prob.trajectory,
+        deepcopy(prob.trajectory),
         goal,
         objective,
-        prob.dynamics,
+        deepcopy(prob.dynamics),
         constraints;
         kwargs...
     )
@@ -97,7 +97,7 @@ end
     using NamedTrajectories
     using PiccoloQuantumObjects 
 
-    H_drift = PAULIS[:Z]
+    H_drift = 0.1PAULIS[:Z]
     H_drives = [PAULIS[:X], PAULIS[:Y]]
     U_goal = GATES[:H]
     T = 51
@@ -106,7 +106,7 @@ end
     sys = QuantumSystem(H_drift, H_drives)
 
     prob = UnitarySmoothPulseProblem(
-        sys, U_goal, T, Δt,
+        sys, U_goal, T, Δt, Δt_min=Δt * 0.01,
         piccolo_options=PiccoloOptions(verbose=false)
     )