diff --git a/rebar.config b/rebar.config
index 84fd954..cd02013 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,3 +1,3 @@
 {erl_opts, []}.
 
-{deps, [{unicode_util_compat, "0.4.1"}]}.
+{deps, []}.
diff --git a/rebar.config.script b/rebar.config.script
deleted file mode 100644
index d2bce94..0000000
--- a/rebar.config.script
+++ /dev/null
@@ -1,11 +0,0 @@
-IsRebar3 = erlang:function_exported(rebar3, main, 1),
-Rebar2Deps = [{unicode_util_compat, ".*",
-               {git, "https://github.com/benoitc/unicode_util_compat.git",
-                {tag, "0.3.1"}}}
-             ],
-case IsRebar3 of
-    true ->
-        CONFIG;
-    false ->
-        lists:keyreplace(deps, 1, CONFIG, {deps, Rebar2Deps})
-end.
diff --git a/rebar.lock b/rebar.lock
deleted file mode 100644
index 15fc8a1..0000000
--- a/rebar.lock
+++ /dev/null
@@ -1,6 +0,0 @@
-{"1.1.0",
-[{<<"unicode_util_compat">>,{pkg,<<"unicode_util_compat">>,<<"0.4.1">>},0}]}.
-[
-{pkg_hash,[
- {<<"unicode_util_compat">>, <<"D869E4C68901DD9531385BB0C8C40444EBF624E60B6962D95952775CAC5E90CD">>}]}
-].
diff --git a/src/idna.erl b/src/idna.erl
index 5f010b3..32b1745 100644
--- a/src/idna.erl
+++ b/src/idna.erl
@@ -333,7 +333,7 @@ lowercase_list([], true) ->
 lowercase_list([], false) ->
   throw(unchanged);
 lowercase_list(CPs0, Changed) ->
-  case unicode_util_compat:lowercase(CPs0) of
+  case unicode_util:lowercase(CPs0) of
     [Char|CPs] when Char =:= hd(CPs0) -> [Char|lowercase_list(CPs, Changed)];
     [Char|CPs] -> append(Char,lowercase_list(CPs, true));
     [] -> lowercase_list([], Changed)
@@ -346,9 +346,9 @@ lowercase_bin(CP1, <<CP2/utf8, Bin/binary>>, Changed)
   when CP1 < 128, CP2 < 256 ->
   [CP1|lowercase_bin(CP2, Bin, Changed)];
 lowercase_bin(CP1, Bin, Changed) ->
-  case unicode_util_compat:lowercase([CP1|Bin]) of
+  case unicode_util:lowercase([CP1|Bin]) of
     [CP1|CPs] ->
-      case unicode_util_compat:cp(CPs) of
+      case unicode_util:cp(CPs) of
         [Next|Rest] ->
           [CP1|lowercase_bin(Next, Rest, Changed)];
         [] when Changed ->
@@ -357,7 +357,7 @@ lowercase_bin(CP1, Bin, Changed) ->
           throw(unchanged)
       end;
     [Char|CPs] ->
-      case unicode_util_compat:cp(CPs) of
+      case unicode_util:cp(CPs) of
         [Next|Rest] ->
           [Char|lowercase_bin(Next, Rest, true)];
         [] ->
@@ -374,7 +374,7 @@ append(GC, Str) when is_list(GC) -> GC ++ Str.
 
 
 characters_to_nfc_list(CD) ->
-  case unicode_util_compat:nfc(CD) of
+  case unicode_util:nfc(CD) of
     [CPs|Str] when is_list(CPs) -> CPs ++ characters_to_nfc_list(Str);
     [CP|Str] -> [CP|characters_to_nfc_list(Str)];
     [] -> []
diff --git a/src/idna_context.erl b/src/idna_context.erl
index afcb814..a09ff1f 100644
--- a/src/idna_context.erl
+++ b/src/idna_context.erl
@@ -28,7 +28,7 @@ valid_contextj(Label, Pos) ->
 valid_contextj(16#200c, Label, Pos) ->
   if
      Pos > 0 ->
-       case unicode_util_compat:lookup(lists:nth(Pos, Label)) of
+       case unicode_util:lookup(lists:nth(Pos, Label)) of
          #{ ccc := ?virama_combining_class } -> true;
          _ ->
            valid_contextj_1(Label, Pos)
@@ -38,7 +38,7 @@ valid_contextj(16#200c, Label, Pos) ->
   end;
 
 valid_contextj(16#200d, Label, Pos) when Pos > 0 ->
-  case unicode_util_compat:lookup(lists:nth(Pos, Label)) of
+  case unicode_util:lookup(lists:nth(Pos, Label)) of
     #{ ccc := ?virama_combining_class } -> true;
     _ -> false
   end;