diff --git a/packages/build-brainscales/package.py b/packages/build-brainscales/package.py
index 39c1c9f521eb7a62159e0f98193784a3958614ca..b80d058387fe3e0c0ed65ce60f9ceb9a52cd4e22 100644
--- a/packages/build-brainscales/package.py
+++ b/packages/build-brainscales/package.py
@@ -15,6 +15,13 @@ import spack.build_environment
 class BuildBrainscales(WafPackage):
     """Common stuff for BrainScaleS packages..."""
 
+    version(
+        "9.0-a7",
+        git="https://github.com/electronicvisions/releases-ebrains",
+        tag="ebrains-9.0-a7",
+        commit="2337adc6a33f907900d2b8be5d9f0b15872a200a",
+        submodules=True,
+    )
     version(
         "9.0-a6",
         git="https://github.com/electronicvisions/releases-ebrains",
@@ -38,6 +45,7 @@ class BuildBrainscales(WafPackage):
     )
 
     # common dependencies of BuildBrainscales-derived packages
+    depends_on('oppulance@9.0-a7', when='@9.0-a7', type=('build', 'link', 'run', 'test'))
     depends_on('oppulance@9.0-a6', when='@9.0-a6', type=('build', 'link', 'run', 'test'))
     depends_on('oppulance@9.0-a5', when='@9.0-a5', type=('build', 'link', 'run', 'test'))
     depends_on('oppulance@9.0-a4', when='@9.0-a4', type=('build', 'link', 'run', 'test'))
diff --git a/packages/oppulance/package.py b/packages/oppulance/package.py
index 0d155a966577ba37f95d349f6317f56d80f6962c..9875947f1263238bee276cdf8cda7360f9e0f93b 100644
--- a/packages/oppulance/package.py
+++ b/packages/oppulance/package.py
@@ -21,6 +21,13 @@ class Oppulance(Package):
     depends_on('wget')
     depends_on('gmp')
 
+    version(
+        "9.0-a7",
+        git="https://github.com/electronicvisions/releases-ebrains",
+        tag="ebrains-9.0-a7",
+        commit="2337adc6a33f907900d2b8be5d9f0b15872a200a",
+        submodules=True,
+    )
     version(
         "9.0-a6",
         git="https://github.com/electronicvisions/releases-ebrains",
diff --git a/packages/wf-brainscales2-demos/package.py b/packages/wf-brainscales2-demos/package.py
index e3e5c8caad8ff879510643addfd91eecce015109..cdf482c71a4e5a2ed0c3f1306f67f8638eb98f7b 100644
--- a/packages/wf-brainscales2-demos/package.py
+++ b/packages/wf-brainscales2-demos/package.py
@@ -16,6 +16,7 @@ class WfBrainscales2Demos(Package):
     maintainers = ["emuller", "muffgaga"]
 
     # ECM: we probably should build the ipynb file in this package
+    version("9.0-a7", tag="jupyter-notebooks-9.0-a7")
     version("9.0-a6", tag="jupyter-notebooks-9.0-a6")
     version("9.0-a5", tag="jupyter-notebooks-9.0-a5")
     version("9.0-a4", tag="jupyter-notebooks-9.0-a4")