1 files changed, 1 insertions, 1 deletions

diff --git a/pyproject.toml b/pyproject.toml

index 1453ddd530..f4d6f0c6bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
     package = "synapse"
     filename = "CHANGES.md"
     directory = "changelog.d"
-    issue_format = "[\#{issue}](https://github.com/matrix-org/synapse/issues/{issue}>)"
+    issue_format = "[\\#{issue}](https://github.com/matrix-org/synapse/issues/{issue}>)"
 
     [[tool.towncrier.type]]
         directory = "feature"