diff --git a/build-support/linkcheck-docker.dockerfile b/build-support/linkcheck-docker.dockerfile
index 684ce0e7..9493eb74 100644
--- a/build-support/linkcheck-docker.dockerfile
+++ b/build-support/linkcheck-docker.dockerfile
@@ -1,4 +1,4 @@
-FROM nixos/nix:2.23.1@sha256:8dc1be8f33165dbc3f8fa26822925b225af471366e1b2958835cc01d316bf773
+FROM nixos/nix:2.23.2@sha256:14b8b20d37d69729582d98b7091714a0cf970eabfc0cc5aad35fe83229a10dde
 
 COPY build-support/*.nix /build-support/
 COPY pyproject.toml poetry.lock /