diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bd1383f5..77b2aef6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Change Log
 
+## [24.5.1] - 2026-10-22
+
+### Fixed
+
+- run garbage collection in `format_taskgraph_multiple`; fixes regression in
+  24.5.0
+
 ## [24.5.0] - 2026-10-21
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index 4ab80f763..e250d69ac 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 ### Project
 [project]
 name = "taskcluster-taskgraph"
-version = "24.5.0"
+version = "24.5.1"
 description = "Build taskcluster taskgraphs"
 readme = "README.rst"
 authors = [
diff --git a/uv.lock b/uv.lock
index 88430a13d..96ef88fc2 100644
--- a/uv.lock
+++ b/uv.lock
@@ -3594,7 +3594,7 @@ wheels = [
 
 [[package]]
 name = "taskcluster-taskgraph"
-version = "24.5.0"
+version = "24.5.1"
 source = { editable = "." }
 dependencies = [
     { name = "appdirs" },