diff --git a/Dockerfile b/Dockerfile
index e86f132a..1acf55fb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Largely based on https://github.com/nicbet/docker-phoenix/blob/main/Dockerfile
-ARG ELIXIR_VERSION=1.15.6
+ARG ELIXIR_VERSION=1.16-otp-25
 ARG NODE_VERSION=20.5.0
 
 FROM node:${NODE_VERSION}-alpine AS node
diff --git a/server/.tool-versions b/server/.tool-versions
index 671cba50..7adb26b8 100644
--- a/server/.tool-versions
+++ b/server/.tool-versions
@@ -1,2 +1,2 @@
 erlang 26.1.1
-elixir 1.15.6-otp-26
+elixir 1.16.0-otp-26