diff --git a/.mergify.yml b/.mergify.yml
index 0b71513f7b..066f0db512 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -6,4 +6,4 @@ pull_request_rules:
     actions:
       backport:
         branches:
-          - stable/0.7
+          - stable/0.8
diff --git a/docs/conf.py b/docs/conf.py
index cc4fab53c8..9e85bd9c17 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -35,10 +35,10 @@
 
 # -- Project information -----------------------------------------------------
 # The short X.Y version
-version = os.getenv("VERSION_STRING", "0.8")
+version = os.getenv("VERSION_STRING", "0.9")
 
 # The full version, including alpha/beta/rc tags
-release = os.getenv("RELEASE_STRING", "0.8.0")
+release = os.getenv("RELEASE_STRING", "0.9.0")
 
 project = "Qiskit Experiments"
 copyright = f"2021-{datetime.date.today().year}, Qiskit Development Team"  # pylint: disable=redefined-builtin
diff --git a/docs/release_notes.rst b/docs/release_notes.rst
index 296c2c2635..4551b6c5af 100644
--- a/docs/release_notes.rst
+++ b/docs/release_notes.rst
@@ -3,7 +3,7 @@ Release Notes
 =============
 
 .. release-notes::
-   :earliest-version: 0.7.0
+   :earliest-version: 0.8.0
 
 .. _Release Notes_0.7.0:
 
diff --git a/qiskit_experiments/VERSION.txt b/qiskit_experiments/VERSION.txt
index a3df0a6959..ac39a106c4 100644
--- a/qiskit_experiments/VERSION.txt
+++ b/qiskit_experiments/VERSION.txt
@@ -1 +1 @@
-0.8.0
+0.9.0