diff --git a/.tool-versions b/.tool-versions
index 12840e58..23a82520 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,3 +1,3 @@
-elixir 1.16.1
-erlang 26.2.1
+elixir 1.17.0
+erlang 27.0
 nodejs 18.14.2
diff --git a/lib/tool_versions.ex b/lib/tool_versions.ex
index 59ced106..21ac3673 100644
--- a/lib/tool_versions.ex
+++ b/lib/tool_versions.ex
@@ -1,6 +1,6 @@
 defmodule ToolVersions do
   @tool_path Path.join([__DIR__, "..", ".tool-versions"])
-  @extra_versions %{debian: "bullseye-20231009-slim"}
+  @extra_versions %{debian: "bullseye-20240513-slim"}
 
   @self_path __ENV__.file
   def path, do: @self_path