diff --git a/src/core.jl b/src/core.jl
index eb45c8e..cea3bf7 100644
--- a/src/core.jl
+++ b/src/core.jl
@@ -25,6 +25,10 @@ See also [`Run.test`](@ref) and [`Run.docs`](@ref).
 - `check_bounds::Union{Nothing, Bool} = nothing`: Control
   `--check-bounds` option.  `nothing` means to inherit the option
   specified for the current Julia session.
+- `depwarn::Union{Nothing, Bool, Symbol} = nothing`: Use `--depwarn` setting
+  of the current process if `nothing` (default).  Set `--depwarn=yes` if `true`
+  or `--depwarn=no` if `false`.  A symbol value is passed as `--depwarn` value.
+  So, passing `:error` sets `--depwarn=error`.
 - `xfail::bool = false`: If failure is expected.
 - `exitcodes::AbstractVector{<:Integer} = xfail ? [1] : [0]`: List of
   allowed exit codes.
@@ -37,7 +41,7 @@ script
 
 Run `\$path/runtests.jl` after activating `\$path/Project.toml`.  It
 simply calls [`Run.script`](@ref) with default keyword arguments
-`code_coverage = true` and `check_bounds = true`.
+`code_coverage = true`, `check_bounds = true`, and `depwarn = true`.
 
 `path` can also be a path to a script file.
 
@@ -195,6 +199,7 @@ function _default_julia_options(;
     compiled_modules::Union{Bool, Nothing} = nothing,
     code_coverage::Bool = false,
     check_bounds::Union{Bool, Nothing} = nothing,
+    depwarn::Union{Bool, Symbol, Nothing} = nothing,
     kwargs...
 )
     if julia_options !== nothing
@@ -204,11 +209,14 @@ function _default_julia_options(;
     jlopt = ``  # = julia_options
     addyn(cmd, ::Nothing) = jlopt
     addyn(cmd, yn::Bool) = `$jlopt $cmd=$(yesno(yn))`
+    addopt(cmd, yn::Union{Bool, Nothing}) = addyn(cmd, yn)
+    addopt(cmd, value::Symbol) = `$jlopt $cmd=$value`
 
     jlopt = addyn("--inline", inline)
     jlopt = addyn("--compiled-modules", compiled_modules)
     jlopt = addyn("--check-bounds", check_bounds)
     jlopt = code_coverage ? `$jlopt --code-coverage=user` : jlopt
+    jlopt = addopt("--depwarn", depwarn)
     jlopt = fast ? `$jlopt --compile=min` : jlopt
 
     return jlopt, kwargs
@@ -295,6 +303,7 @@ test(path="test"; kwargs...) = script(
     existingscript(path, (path, joinpath(path, "runtests.jl")));
     code_coverage = true,
     check_bounds = true,
+    depwarn = true,
     kwargs...
 )
 docs(path="docs"; kwargs...) = script(
diff --git a/test/depwarn-error/Manifest.toml b/test/depwarn-error/Manifest.toml
new file mode 100644
index 0000000..e69de29
diff --git a/test/depwarn-error/Project.toml b/test/depwarn-error/Project.toml
new file mode 100644
index 0000000..e69de29
diff --git a/test/depwarn-error/test.jl b/test/depwarn-error/test.jl
new file mode 100644
index 0000000..d05e8b9
--- /dev/null
+++ b/test/depwarn-error/test.jl
@@ -0,0 +1 @@
+@assert Base.JLOptions().depwarn == 2
diff --git a/test/depwarn-no/Manifest.toml b/test/depwarn-no/Manifest.toml
new file mode 100644
index 0000000..e69de29
diff --git a/test/depwarn-no/Project.toml b/test/depwarn-no/Project.toml
new file mode 100644
index 0000000..e69de29
diff --git a/test/depwarn-no/test.jl b/test/depwarn-no/test.jl
new file mode 100644
index 0000000..3102d36
--- /dev/null
+++ b/test/depwarn-no/test.jl
@@ -0,0 +1 @@
+@assert Base.JLOptions().depwarn == 0
diff --git a/test/depwarn-yes/Manifest.toml b/test/depwarn-yes/Manifest.toml
new file mode 100644
index 0000000..e69de29
diff --git a/test/depwarn-yes/Project.toml b/test/depwarn-yes/Project.toml
new file mode 100644
index 0000000..e69de29
diff --git a/test/depwarn-yes/test.jl b/test/depwarn-yes/test.jl
new file mode 100644
index 0000000..b0d25bc
--- /dev/null
+++ b/test/depwarn-yes/test.jl
@@ -0,0 +1 @@
+@assert Base.JLOptions().depwarn == 1
diff --git a/test/runtests.jl b/test/runtests.jl
index 6cb5750..8f62315 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -5,6 +5,9 @@ using Test
 
 pass_script = joinpath(@__DIR__, "pass", "pass.jl")
 fail_script = joinpath(@__DIR__, "fail", "fail.jl")
+depwarn_no_script = joinpath(@__DIR__, "depwarn-no", "test.jl")
+depwarn_yes_script = joinpath(@__DIR__, "depwarn-yes", "test.jl")
+depwarn_error_script = joinpath(@__DIR__, "depwarn-error", "test.jl")
 
 @testset "xfail" begin
     @testset "true pass" begin
@@ -50,6 +53,13 @@ fail_script = joinpath(@__DIR__, "fail", "fail.jl")
     end
 end
 
+@testset "depwarn" begin
+    @test Run.test(depwarn_yes_script).proc.exitcode == 0
+    @test Run.test(depwarn_yes_script; depwarn = false, xfail = true).proc.exitcode == 1
+    @test Run.test(depwarn_no_script; depwarn = false).proc.exitcode == 0
+    @test Run.test(depwarn_error_script; depwarn = :error).proc.exitcode == 0
+end
+
 @testset "smoke test" begin
     withenv("DOCUMENTER_KEY" => nothing) do
         @test Run.docs(joinpath(@__DIR__, "..", "docs")) isa Any