diff --git a/core/src/util.jl b/core/src/util.jl
index fb1521214..38bed6f29 100644
--- a/core/src/util.jl
+++ b/core/src/util.jl
@@ -447,7 +447,7 @@ function get_all_priorities(db::DB, config::Config)::Vector{Int32}
         (FlowDemandTimeV1, "FlowDemand / time"),
     ]
         priority_col = load_structvector(db, config, type).priority
-        priority_col = coalesce.(priority_col, Int32(0))
+        priority_col = Int32.(coalesce.(priority_col, Int32(0)))
         if valid_priorities(priority_col, config.allocation.use_allocation)
             union!(priorities, priority_col)
         else
diff --git a/pixi.toml b/pixi.toml
index eaa5342dc..b8759c8f2 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -88,6 +88,7 @@ test-ribasim-regression = { cmd = "julia --project=core --eval 'using Pkg; Pkg.t
 generate-testmodels = { cmd = "python utils/generate-testmodels.py", inputs = [
     "python/ribasim",
     "python/ribasim_testmodels",
+    "utils/generate-testmodels.py",
 ], outputs = [
     "generated_testmodels",
 ] }
diff --git a/python/ribasim/ribasim/delwaq/generate.py b/python/ribasim/ribasim/delwaq/generate.py
index bb1bf8e5a..e99abd63c 100644
--- a/python/ribasim/ribasim/delwaq/generate.py
+++ b/python/ribasim/ribasim/delwaq/generate.py
@@ -74,7 +74,8 @@ def _make_boundary(data, boundary_type):
         .reset_index()
         .reset_index(drop=True)
     )
-    piv.time = piv.time.dt.strftime("%Y/%m/%d-%H:%M:%S")
+    # Convert Arrow time to Numpy to avoid needing tzdata somehow
+    piv.time = pd.to_datetime(piv.time).dt.strftime("%Y-%m-%d %H:%M:%S")
     boundary = {
         "name": bid,
         "substances": list(map(_quote, piv.columns[1:])),