diff --git a/.github/workflows/erlang-checks.yaml b/.github/workflows/erlang-checks.yaml
index f119e4a..ae0eeb1 100644
--- a/.github/workflows/erlang-checks.yaml
+++ b/.github/workflows/erlang-checks.yaml
@@ -30,7 +30,7 @@ jobs:
   run:
     name: Run checks
     needs: setup
-    uses: valitydev/erlang-workflows/.github/workflows/erlang-parallel-build.yml@v1.0.15
+    uses: valitydev/erlang-workflows/.github/workflows/erlang-parallel-build.yml@v1
     with:
       otp-version: ${{ needs.setup.outputs.otp-version }}
       rebar-version: ${{ needs.setup.outputs.rebar-version }}
diff --git a/rebar.config b/rebar.config
index bed14d7..1b1fbf9 100644
--- a/rebar.config
+++ b/rebar.config
@@ -81,12 +81,10 @@
                 {git, "https://github.com/valitydev/logger_logstash_formatter.git", {ref, "08a66a6"}}},
             % for introspection on production
             {recon, "2.5.2"},
-            {observer_cli, "1.5.4"},
-            {iosetopts, {git, "https://github.com/valitydev/iosetopts.git", {ref, "edb445c"}}}
+            {observer_cli, "1.5.4"}
         ]},
         {relx, [
             {release, {dominant, "0.1"}, [
-                iosetopts,
                 % tools for introspection
                 {recon, load},
                 % remote introspection
diff --git a/rebar.lock b/rebar.lock
index 9da0890..78dbca2 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -13,7 +13,7 @@
  {<<"ctx">>,{pkg,<<"ctx">>,<<"0.6.0">>},2},
  {<<"damsel">>,
   {git,"https://github.com/valitydev/damsel.git",
-       {ref,"81d1edce2043500e4581867da3f5f4c31e682f44"}},
+       {ref,"ab44b9db25a76a2c50545fd884e4cdf3d3e3b628"}},
   0},
  {<<"dmt_core">>,
   {git,"https://github.com/valitydev/dmt-core.git",