diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index d6919e4..71e8ba2 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -22,7 +22,7 @@ A list of software versions where the bug is apparent, as detailed as possible:
 
 An ordered list of steps to replicate the bug:
 
-1. run `rebar3 ci`
+1. run `rebar3 as test ci`
 2. search for `...` in the error output
 3. look at file `...`
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ba60562..523feef 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,3 +52,6 @@ jobs:
       - name: Continuous Integration
         run: |
           rebar3 as test ci
+
+      - name: Check if build left artifacts
+        run: git diff --exit-code
diff --git a/.gitignore b/.gitignore
index 1002e04..776f794 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ _build
 doc/
 erl_crash.dump
 rebar3.crashdump
+rebar.lock
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 4d4caaa..4e672fb 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,8 +20,9 @@
 Bugs can be reported via
 [GitHub issues: bug report](https://github.com/arizona-framework/arizona_example/issues/new?template=bug_report.md).
 
-Some contributors and maintainers may be unpaid developers working on `arizona_example`, in their own time,
-with limited resources. We ask for respect and understanding, and will provide the same back.
+Some contributors and maintainers may be unpaid developers working on `arizona_example`, in their
+own time, with limited resources. We ask for respect and understanding, and will provide the same
+back.
 
 If your contribution is an actual bug fix, we ask you to include tests that, not only show the issue
 is solved, but help prevent future regressions related to it.
@@ -30,8 +31,8 @@ is solved, but help prevent future regressions related to it.
 
 Before requesting or implementing a new feature, do the following:
 
-- search, in existing [issues](https://github.com/arizona-framework/arizona_example/issues) (open or closed),
-whether the feature might already be in the works, or has already been rejected,
+- search, in existing [issues](https://github.com/arizona-framework/arizona_example/issues) (open or
+closed), whether the feature might already be in the works, or has already been rejected,
 - make sure you're using the latest software release (or even the latest code, if you're going for
 _bleeding edge_).
 
@@ -40,8 +41,8 @@ If this is done, open up a
 
 We may discuss details with you regarding the implementation, and its inclusion within the project.
 
-We try to have as many of `arizona_example`'s features tested as possible. Everything that a user can do,
-and is repeatable in any way, should be tested, to guarantee backwards compatible.
+We try to have as many of `arizona_example`'s features tested as possible. Everything that a user
+can do, and is repeatable in any way, should be tested, to guarantee backwards compatible.
 
 ## Submitting your changes
 
diff --git a/rebar.config b/rebar.config
index f4231ff..a27c3ad 100644
--- a/rebar.config
+++ b/rebar.config
@@ -29,8 +29,6 @@
 
 {alias, [
     {ci, [
-        {unlock, "--all"},
-        {upgrade, "--all"},
         lint,
         {do, "default as test xref"},
         {do, "default as test dialyzer"},
diff --git a/rebar.lock b/rebar.lock
deleted file mode 100644
index b50d811..0000000
--- a/rebar.lock
+++ /dev/null
@@ -1,24 +0,0 @@
-{"1.2.0",
-[{<<"arizona">>,
-  {git,"https://github.com/arizona-framework/arizona",
-       {ref,"96dbd6d6542c8ae85fd5a15046da5cdd35dae1f7"}},
-  0},
- {<<"cowboy">>,{pkg,<<"cowboy">>,<<"2.12.0">>},1},
- {<<"cowlib">>,{pkg,<<"cowlib">>,<<"2.13.0">>},2},
- {<<"fs">>,{pkg,<<"fs">>,<<"8.6.1">>},1},
- {<<"gproc">>,{pkg,<<"gproc">>,<<"1.0.0">>},1},
- {<<"ranch">>,{pkg,<<"ranch">>,<<"1.8.0">>},2}]}.
-[
-{pkg_hash,[
- {<<"cowboy">>, <<"F276D521A1FF88B2B9B4C54D0E753DA6C66DD7BE6C9FCA3D9418B561828A3731">>},
- {<<"cowlib">>, <<"DB8F7505D8332D98EF50A3EF34B34C1AFDDEC7506E4EE4DD4A3A266285D282CA">>},
- {<<"fs">>, <<"7C9C0D0211E8C520E4E9EDA63B960605C2711839F47285E6166C332D973BE8EA">>},
- {<<"gproc">>, <<"AA9EC57F6C9FF065B16D96924168D7C7157CD1FD457680EFE4B1274F456FA500">>},
- {<<"ranch">>, <<"8C7A100A139FD57F17327B6413E4167AC559FBC04CA7448E9BE9057311597A1D">>}]},
-{pkg_hash_ext,[
- {<<"cowboy">>, <<"8A7ABE6D183372CEB21CAA2709BEC928AB2B72E18A3911AA1771639BEF82651E">>},
- {<<"cowlib">>, <<"E1E1284DC3FC030A64B1AD0D8382AE7E99DA46C3246B815318A4B848873800A4">>},
- {<<"fs">>, <<"61EA2BDAEDAE4E2024D0D25C63E44DCCF65622D4402DB4A2DF12868D1546503F">>},
- {<<"gproc">>, <<"109F253C2787DE8A371A51179D4973230CBEC6239EE673FA12216A5CE7E4F902">>},
- {<<"ranch">>, <<"49FBCFD3682FAB1F5D109351B61257676DA1A2FDBE295904176D5E521A2DDFE5">>}]}
-].