diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5848a8b..d79b319 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
               elixir: "1.15"
               otp: "26.2"
           - pair:
-              elixir: "1.19"
+              elixir: "1.20"
               otp: "29.0"
             lint: lint
     steps:
diff --git a/.tool-versions b/.tool-versions
index 0c842a1..2672640 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-elixir 1.19.0-otp-28
-erlang 28.1
+elixir 1.20.0-otp-29
+erlang 29.0.1