diff --git a/rebar.config b/rebar.config
index 95dec9b93..81849430f 100644
--- a/rebar.config
+++ b/rebar.config
@@ -144,7 +144,14 @@
                         {if_var_true, tools, tools}]}]}.
 
 {if_rebar3, {plugins, [rebar3_hex, {provider_asn1, "0.2.0"},
-                       {if_var_true, elixir, rebar_mix}]}}.
+                       %% Protocol consolidation doesn't work correctly in upstream rebar_mix, see
+                       %% https://github.com/Supersonido/rebar_mix/issues/27#issuecomment-894873335
+                       %% Let's use this fixed rebar_mix fork, see its PR:
+                       %% https://github.com/Supersonido/rebar_mix/pull/31
+                       {if_var_true, elixir, {rebar_mix, ".*",
+                                              {git, "https://github.com/bsanyi/rebar_mix.git",
+                                               {branch, "consolidation_fix"}}}
+                       }]}}.
 {if_rebar3, {project_plugins, [configure_deps]}}.
 {if_not_rebar3, {plugins, [
                            deps_erl_opts, override_deps_versions2, override_opts, configure_deps