diff --git a/.clusterfuzzlite/Dockerfile b/.clusterfuzzlite/Dockerfile
index 2f6eb44..457877f 100644
--- a/.clusterfuzzlite/Dockerfile
+++ b/.clusterfuzzlite/Dockerfile
@@ -3,7 +3,7 @@
 # the compile_python_fuzzer helper.
 # Pinned by SHA256 (closes Scorecard PinnedDependenciesID); Dependabot's
 # docker ecosystem keeps the digest fresh.
-FROM gcr.io/oss-fuzz-base/base-builder-python@sha256:9c97273c8de83d22a40462fdda4371d1ff16eac065c72ee03bef7fdb1aaaf458
+FROM gcr.io/oss-fuzz-base/base-builder-python@sha256:1721fd6c14317227ea8de27748dc07d447bf67e1abfabecda3b75cc84fdaf5e2
 
 COPY . $SRC/aemo-mdff-reader
 WORKDIR $SRC/aemo-mdff-reader