diff --git a/action.yml b/action.yml
index 591bc8d..79d7807 100644
--- a/action.yml
+++ b/action.yml
@@ -60,7 +60,7 @@ runs:
       if: inputs.annotate == 'true'
     - run: |
         # The Julia command that will be executed
-        julia_cmd=( julia --color=yes --depwarn=${{ inputs.depwarn }} --inline=${{ inputs.inline }} --project=${{ inputs.project }} -e 'include(joinpath(ENV["GITHUB_ACTION_PATH"], "test_harness.jl"))' -- ${{inputs.test_args}} )
+        julia_cmd=( julia --color=yes --inline=${{ inputs.inline }} --project=${{ inputs.project }} -e 'include(joinpath(ENV["GITHUB_ACTION_PATH"], "test_harness.jl"))' -- ${{inputs.test_args}} )
 
         # Add the prefix in front of the command if there is one
         prefix=( ${{ inputs.prefix }} )
@@ -77,3 +77,4 @@ runs:
         CHECK_BOUNDS: ${{ inputs.check_bounds }}
         COMPILED_MODULES: ${{ inputs.compiled_modules }}
         ALLOW_RERESOLVE: ${{ inputs.allow_reresolve }}
+        DEPWARN: ${{ inputs.depwarn }}
diff --git a/test_harness.jl b/test_harness.jl
index d865638..b76c769 100644
--- a/test_harness.jl
+++ b/test_harness.jl
@@ -4,7 +4,10 @@ kwargs = Kwargs.kwargs(; coverage=ENV["COVERAGE"],
                          force_latest_compatible_version=ENV["FORCE_LATEST_COMPATIBLE_VERSION"],
                          allow_reresolve=ENV["ALLOW_RERESOLVE"],
                          julia_args=[string("--check-bounds=", ENV["CHECK_BOUNDS"]),
-                                     string("--compiled-modules=", ENV["COMPILED_MODULES"])],
+                                     string("--compiled-modules=", ENV["COMPILED_MODULES"]),
+                                     # Needs to be done via `julia_args` to ensure `depwarn: no` is respected:
+                                     # https://github.com/JuliaLang/Pkg.jl/pull/1763#discussion_r406819660
+                                     string("--depwarn=", ENV["DEPWARN"]),],
                          test_args=ARGS,
                          )