diff --git a/scripts/ensure-rebar3.sh b/scripts/ensure-rebar3.sh
index 054deabd4..14b6ad7c7 100755
--- a/scripts/ensure-rebar3.sh
+++ b/scripts/ensure-rebar3.sh
@@ -4,17 +4,8 @@ set -euo pipefail
 
 [ "${DEBUG:-0}" -eq 1 ] && set -x
 
-## rebar3 tag 3.19.0-emqx-1 is compiled using latest official OTP-24 image.
-## we have to use an otp24-compiled rebar3 because the defination of record #application{}
-## in systools.hrl is changed in otp24.
 OTP_VSN="${OTP_VSN:-$(./scripts/get-otp-vsn.sh)}"
 case ${OTP_VSN} in
-    23*)
-        VERSION="3.16.1-emqx-1"
-        ;;
-    24*)
-        VERSION="3.18.0-emqx-1"
-        ;;
     25*)
         VERSION="3.19.0-emqx-9"
         ;;
@@ -22,7 +13,7 @@ case ${OTP_VSN} in
         VERSION="3.20.0-emqx-1"
         ;;
     *)
-        echo "Unsupporetd Erlang/OTP version $OTP_VSN"
+        echo "Unsupported Erlang/OTP version $OTP_VSN"
         exit 1
         ;;
 esac
diff --git a/scripts/get-otp-vsn.sh b/scripts/get-otp-vsn.sh
index 699a16f3f..d21e2c830 100755
--- a/scripts/get-otp-vsn.sh
+++ b/scripts/get-otp-vsn.sh
@@ -2,4 +2,4 @@
 
 set -euo pipefail
 
-erl  -noshell -eval '{ok, Version} = file:read_file(filename:join([code:root_dir(), "releases", erlang:system_info(otp_release), "OTP_VERSION"])), io:fwrite(Version), halt().'
+erl -noshell -eval '{ok, Version} = file:read_file(filename:join([code:root_dir(), "releases", erlang:system_info(otp_release), "OTP_VERSION"])), io:fwrite(Version), halt().'