diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a374aca7..9155d37e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,10 @@ internal API changes are not present.
 
 Main (unreleased)
 -----------------
+
+v1.4.0-rc.0
+-----------------
+
 ### Breaking changes
 
 - [otelcol.processor.transform] The functions `convert_sum_to_gauge` and `convert_gauge_to_sum` must now be used in the `metric` `context` rather than in the `datapoint` context.
diff --git a/VERSION b/VERSION
index cfa1ed287..ca452642f 100644
--- a/VERSION
+++ b/VERSION
@@ -20,4 +20,4 @@
 #
 # Lines starting with "#" and blank lines are ignored.
 
-v1.4.0
+v1.5.0
diff --git a/docs/sources/_index.md b/docs/sources/_index.md
index 3421599fe..dab873cce 100644
--- a/docs/sources/_index.md
+++ b/docs/sources/_index.md
@@ -4,7 +4,7 @@ title: Grafana Alloy
 description: Grafana Alloy is a a vendor-neutral distribution of the OTel Collector
 weight: 350
 cascade:
-  ALLOY_RELEASE: v1.4.0
+  ALLOY_RELEASE: v1.5.0
   OTEL_VERSION: v0.105.0
   FULL_PRODUCT_NAME: Grafana Alloy
   PRODUCT_NAME: Alloy