diff --git a/src/AutoMerge/public.jl b/src/AutoMerge/public.jl
index 2bf9fab3..f759fe27 100644
--- a/src/AutoMerge/public.jl
+++ b/src/AutoMerge/public.jl
@@ -161,6 +161,7 @@ function run(;
             public_registries=public_registries,
             read_only=read_only,
             environment_variables_to_pass=environment_variables_to_pass,
+            new_package_waiting_period=new_package_waiting_period,
         )
     else
         always_assert(run_merge_build)
diff --git a/src/AutoMerge/pull_requests.jl b/src/AutoMerge/pull_requests.jl
index 72570f29..4f2188f5 100644
--- a/src/AutoMerge/pull_requests.jl
+++ b/src/AutoMerge/pull_requests.jl
@@ -89,6 +89,7 @@ function pull_request_build(
     public_registries::Vector{<:AbstractString}=String[],
     read_only::Bool,
     environment_variables_to_pass::Vector{<:AbstractString}=String[],
+    new_package_waiting_period=new_package_waiting_period,
 )::Nothing
     pr = my_retry(() -> GitHub.pull_request(api, registry, pr_number; auth=auth))
     _github_api_pr_head_commit_sha = pull_request_head_sha(pr)
@@ -165,12 +166,12 @@ function pull_request_build(
         read_only=read_only,
         environment_variables_to_pass=environment_variables_to_pass,
     )
-    pull_request_build(data; check_license=check_license)
+    pull_request_build(data; check_license=check_license, new_package_waiting_period=new_package_waiting_period)
     rm(registry_master; force=true, recursive=true)
     return nothing
 end
 
-function pull_request_build(data::GitHubAutoMergeData; check_license)::Nothing
+function pull_request_build(data::GitHubAutoMergeData; check_license, new_package_waiting_period)::Nothing
     kind = package_or_version(data.registration_type)
     this_is_jll_package = is_jll_name(data.pkg)
     @info(
@@ -231,7 +232,8 @@ function pull_request_build(data::GitHubAutoMergeData; check_license)::Nothing
             data.registration_type,
             data.suggest_onepointzero,
             data.version,
-            this_pr_can_use_special_jll_exceptions,
+            this_pr_can_use_special_jll_exceptions;
+            new_package_waiting_period=new_package_waiting_period
         )
         my_retry(() -> update_automerge_comment!(data, this_pr_comment_pass))
     else # failure
diff --git a/src/AutoMerge/util.jl b/src/AutoMerge/util.jl
index 9286843a..550e38f3 100644
--- a/src/AutoMerge/util.jl
+++ b/src/AutoMerge/util.jl
@@ -153,7 +153,7 @@ function _comment_noblock(n)
 end
 
 function comment_text_pass(
-    ::NewVersion, suggest_onepointzero::Bool, version::VersionNumber, is_jll::Bool
+    ::NewVersion, suggest_onepointzero::Bool, version::VersionNumber, is_jll::Bool; new_package_waiting_period
 )
     # Need to know this ahead of time to get the section numbers right
     suggest_onepointzero &= version < v"1.0.0"
@@ -171,7 +171,7 @@ function comment_text_pass(
 end
 
 function comment_text_pass(
-    ::NewPackage, suggest_onepointzero::Bool, version::VersionNumber, is_jll::Bool
+    ::NewPackage, suggest_onepointzero::Bool, version::VersionNumber, is_jll::Bool; new_package_waiting_period
 )
     suggest_onepointzero &= version < v"1.0.0"
     if is_jll
@@ -192,7 +192,7 @@ function comment_text_pass(
             _automerge_guidelines_passed_section_title(3),
             "Your new package registration met all of the ",
             "guidelines for auto-merging and is scheduled to ",
-            "be merged when the mandatory waiting period (3 days) has elapsed.\n\n",
+            "be merged when the mandatory waiting period ($new_package_waiting_period) has elapsed.\n\n",
             _onepointzero_suggestion(4, suggest_onepointzero, version),
             _comment_noblock(suggest_onepointzero ? 5 : 4),
             "<!-- [noblock] -->",
diff --git a/test/automerge-unit.jl b/test/automerge-unit.jl
index eafa4e1d..95a6e020 100644
--- a/test/automerge-unit.jl
+++ b/test/automerge-unit.jl
@@ -61,7 +61,7 @@ function comment_reference_test()
                 name = string("comment", "_pass_", pass, "_type_", type_name,
                 "_suggest_onepointzero_", suggest_onepointzero,
                 "_version_", version, "_is_jll_", is_jll)
-                @test_reference "reference_comments/$name.md" AutoMerge.comment_text_pass(type, suggest_onepointzero, version, is_jll) by=strip_equal
+                @test_reference "reference_comments/$name.md" AutoMerge.comment_text_pass(type, suggest_onepointzero, version, is_jll, new_package_waiting_period=Day(3)) by=strip_equal
             end
         else
             for point_to_slack in (true, false)
@@ -86,6 +86,10 @@ end
     @testset "comment_reference_test" begin
         comment_reference_test()
     end
+    @testset "Customized `new_package_waiting_period` in AutoMerge comment " begin
+        text = AutoMerge.comment_text_pass(AutoMerge.NewPackage(), false, v"1", false; new_package_waiting_period=Minute(45))
+        @test occursin("(45 minutes)", text)
+    end
     @testset "`AutoMerge.parse_registry_pkg_info`" begin
         registry_path = joinpath(DEPOT_PATH[1], "registries", "General")
         result = AutoMerge.parse_registry_pkg_info(registry_path, "RegistryCI", "1.0.0")