diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2003e0f..3dc9f86 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
     
     strategy:
       matrix:
-        otp_version: [20,21,22,23]
+        otp_version: [21,22,23,24]
         os: [ubuntu-latest]
       
     container:
diff --git a/.gitignore b/.gitignore
index f4c00b6..15348a3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@ priv
 _build
 c_src/**/*.d
 erl_crash.dump
+tags
diff --git a/rebar.config.script b/rebar.config.script
index 44ed350..358e71c 100644
--- a/rebar.config.script
+++ b/rebar.config.script
@@ -23,7 +23,7 @@ CFlags =
     end.
 
 [
-    {require_min_otp_vsn, "R15"},
+    {require_min_otp_vsn, "21"},
     {port_env, [
         %% Default darwin ldflags causes loading of system sqlite. Removed -bundle flag.
         {"darwin", "DRV_LDFLAGS",