diff --git a/dependencies.Dockerfile b/dependencies.Dockerfile
index 676e79116d1..48eb976ef5b 100644
--- a/dependencies.Dockerfile
+++ b/dependencies.Dockerfile
@@ -1,4 +1,4 @@
 # This is a renovate-friendly source of Docker images.
 FROM python:3.13.6-slim-bullseye@sha256:e98b521460ee75bca92175c16247bdf7275637a8faaeb2bcfa19d879ae5c4b9a AS python
-FROM otel/weaver:v0.20.0@sha256:fa4f1c6954ecea78ab1a4e865bd6f5b4aaba80c1896f9f4a11e2c361d04e197e AS weaver
+FROM otel/weaver:v0.21.0@sha256:b144c94bbb8b09246f24d2b705636e177af8fd954f9f6756e7fb5663d6f86188 AS weaver
 FROM avtodev/markdown-lint:v1@sha256:6aeedc2f49138ce7a1cd0adffc1b1c0321b841dc2102408967d9301c031949ee AS markdown