diff --git a/.dev/up_deps.jl b/.dev/up_deps.jl
new file mode 100644
index 0000000000..9e874f4e89
--- /dev/null
+++ b/.dev/up_deps.jl
@@ -0,0 +1,37 @@
+#=
+A simple script for updating the manifest
+files in all of our environments.
+=#
+
+root = dirname(@__DIR__)
+dirs = (
+    root,
+    joinpath(root, "artifacts"),
+    joinpath(root, "test"),
+    joinpath(root, ".dev"),
+    joinpath(root, "perf"),
+    joinpath(root, "docs"),
+    joinpath(root, "experiments/AMIP/modular"),
+)
+
+cd(root) do
+    for dir in dirs
+        reldir = relpath(dir, root)
+        @info "Updating environment `$reldir`"
+        cmd = if dir == root
+            `$(Base.julia_cmd()) --project -e """import Pkg; Pkg.update()"""`
+        elseif dir == joinpath(root, ".dev")
+            `$(Base.julia_cmd()) --project=$reldir -e """import Pkg; Pkg.update()"""`
+        else
+            `$(Base.julia_cmd()) --project=$reldir -e """import Pkg; Pkg.develop(;path=\".\"); Pkg.update()"""`
+        end
+        run(cmd)
+    end
+end
+
+# https://github.com/JuliaLang/Pkg.jl/issues/3014
+for dir in dirs
+    cd(dir) do
+        rm("LocalPreferences.toml"; force = true)
+    end
+end