diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d79eaf..a00824a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,10 +8,16 @@ Operators, you should copy/paste content of this content straight to your projec
 
 If you were at `firehose-core` version `1.0.0` and are bumping to `1.1.0`, you should copy the content between those 2 version to your own repository, replacing placeholder value `fire{chain}` with your chain's own binary.
 
-## Unreleased
+## v1.2.3
+
+### Substreams improvements
+
+* Performance: prevent reprocessing jobs when there is only a mapper in production mode and everything is already cached
+* Performance: prevent "UpdateStats" from running too often and stalling other operations when running with a high parallel jobs count
+* Performance: fixed bug in scheduler ramp-up function sometimes waiting before raising the number of workers
+* Added the output module's hash to the "incoming request" log
 
-* Substreams Performance: prevent reprocessing jobs when there is only a mapper in production mode and everything is already cached
-* Substreams Performance: prevent "UpdateStats" from running too often and affecting performance
+### Reader node and Beacon blocks
 * The `reader-node-bootstrap-url` gained the ability to be bootstrapped from a `bash` script.
 
 	If the bootstrap URL is of the form `bash:///<path/to/script>?<parameters>`, the bash script at
diff --git a/go.mod b/go.mod
index a1fb91e..ff3f999 100644
--- a/go.mod
+++ b/go.mod
@@ -30,7 +30,7 @@ require (
 	github.com/streamingfast/logging v0.0.0-20230608130331-f22c91403091
 	github.com/streamingfast/pbgo v0.0.6-0.20240131193313-6b88bc7139db
 	github.com/streamingfast/snapshotter v0.0.0-20230316190750-5bcadfde44d0
-	github.com/streamingfast/substreams v1.3.6-0.20240229183343-340f069400f1
+	github.com/streamingfast/substreams v1.3.6
 	github.com/stretchr/testify v1.8.4
 	github.com/test-go/testify v1.1.4
 	go.uber.org/multierr v1.10.0
diff --git a/go.sum b/go.sum
index b09fcaf..b367bb4 100644
--- a/go.sum
+++ b/go.sum
@@ -623,8 +623,8 @@ github.com/streamingfast/shutter v1.5.0 h1:NpzDYzj0HVpSiDJVO/FFSL6QIK/YKOxY0gJAt
 github.com/streamingfast/shutter v1.5.0/go.mod h1:B/T6efqdeMGbGwjzPS1ToXzYZI4kDzI5/u4I+7qbjY8=
 github.com/streamingfast/snapshotter v0.0.0-20230316190750-5bcadfde44d0 h1:Y15G1Z4fpEdm2b+/70owI7TLuXadlqBtGM7rk4Hxrzk=
 github.com/streamingfast/snapshotter v0.0.0-20230316190750-5bcadfde44d0/go.mod h1:/Rnz2TJvaShjUct0scZ9kKV2Jr9/+KBAoWy4UMYxgv4=
-github.com/streamingfast/substreams v1.3.6-0.20240229183343-340f069400f1 h1:cayPUiK4FCcEPrcUy3ueMvV6+YofVKc1gHU2OJZRyXY=
-github.com/streamingfast/substreams v1.3.6-0.20240229183343-340f069400f1/go.mod h1:89rAcqQdwh6jU+/pRSz+ktLFqOfcZSzmSZUn+3kRfNs=
+github.com/streamingfast/substreams v1.3.6 h1:ZV8GmUVgZvvX8LNeFC9mK9xj+Mx1OIki4/pufAdoKxc=
+github.com/streamingfast/substreams v1.3.6/go.mod h1:89rAcqQdwh6jU+/pRSz+ktLFqOfcZSzmSZUn+3kRfNs=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=