diff --git a/changelog.d/10132.doc b/changelog.d/10132.doc
new file mode 100644
index 000000000..70f538f07
--- /dev/null
+++ b/changelog.d/10132.doc
@@ -0,0 +1 @@
+Fix broken link in Docker docs.
diff --git a/docker/README.md b/docker/README.md
index c8d3c4b3d..3f28cdada 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -226,4 +226,4 @@ healthcheck:
 ## Using jemalloc
 
 Jemalloc is embedded in the image and will be used instead of the default allocator.
-You can read about jemalloc by reading the Synapse [README](../README.md).
+You can read about jemalloc by reading the Synapse [README](../README.rst).