diff --git a/.github/workflows/build-dev.yml b/.github/workflows/build-dev.yml
index 2e5d10f1..0ccd0c5c 100644
--- a/.github/workflows/build-dev.yml
+++ b/.github/workflows/build-dev.yml
@@ -45,7 +45,7 @@ jobs:
     - name: Push to development
       if: ${{  matrix.python-version == 3.12 }}
       run: |
-        cp -R target/* development
+        rsync -a --delete --exclude '.git/' target/ development/
         cd development
         rm -rf build openMINDS.egg-info
         git config --global user.email "openminds@ebrains.eu"
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ea13abaa..c045025e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -45,7 +45,7 @@ jobs:
     - name: Push to main
       if: ${{  matrix.python-version == 3.12 }}
       run: |
-        cp -R target/* main
+        rsync -a --delete --exclude '.git/' target/ main/
         cd main
         rm -rf build openMINDS.egg-info
         git config --global user.email "openminds@ebrains.eu"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40e9b382..62b3772f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,3 +53,16 @@ For more detail see #29.
 
 - Added release candidate for openMINDS v4
 - Nodes in a collection are now sorted by ID.
+
+## Release 0.3.1 (2025-09-09)
+
+- includes fixes and additions to instance library, including:
+    - replacement of MRAcquisitionType by MRSpatialEncoding
+    - the addition of a Marmoset brain atlas, and some other new instances
+    - improved consistency of @id paths, spelling corrections, improved term definitions
+- more reliable export as JSON-LD: specifically when a property which expects a single value
+  has a list/tuple as a value, this would break JSON-LD export.
+  Now, although it is marked as a validation failure, this does not prevent export.
+- addition of a `Link` class, to allow making reference to remote graph nodes defined by their `@id`
+  that are not present locally.
+- improved CI testing: we now test v3 and v4, as well as "latest".
diff --git a/build.py b/build.py
index 18b44537..08352fc2 100644
--- a/build.py
+++ b/build.py
@@ -112,7 +112,7 @@
 
 env = Environment(loader=FileSystemLoader(os.path.dirname(os.path.realpath(__file__))), autoescape=select_autoescape())
 context = {
-    "version": "0.3.0",
+    "version": "0.3.1",
 }
 if args.branch == "development":
     context["version"] += ".dev"
@@ -130,6 +130,7 @@
 shutil.copy("pipeline/src/collection.py", "target/openminds/collection.py")
 shutil.copy("pipeline/src/README.md", "target/README.md")
 shutil.copy("./LICENSE", "target/LICENSE")
+shutil.copy("./CHANGELOG.md", "target/CHANGELOG.md")
 
 # If we have a PyPI release for the current version, complete the codemeta.json template
 try:
diff --git a/pipeline/src/codemeta.json b/pipeline/src/codemeta.json
index 1d32f3a8..13a0423e 100644
--- a/pipeline/src/codemeta.json
+++ b/pipeline/src/codemeta.json
@@ -46,6 +46,12 @@
         "@type": "Person",
         "givenName": "Louisa",
         "familyName": "Köhnen"
+      },
+      {
+        "@type": "Person",
+        "@id": "https://orcid.org/0000-0002-5618-9776",
+        "givenName": "Raphaël",
+        "familyName": "Gazzotti"
       }
     ]
   }