diff --git a/CITATION.cff b/CITATION.cff
new file mode 100644
index 0000000000000000000000000000000000000000..ea533bea220a1fc2ca596c63679acf1c0bb6266a
--- /dev/null
+++ b/CITATION.cff
@@ -0,0 +1,25 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+  - family-names: Fitschen
+    given-names: Timm
+    orcid: https://orcid.org/0000-0002-4022-432X
+  - family-names: Schlemmer
+    given-names: Alexander
+    orcid: https://orcid.org/0000-0003-4124-9649
+  - family-names: Hornung
+    given-names: Daniel
+    orcid: https://orcid.org/0000-0002-7846-6375
+  - family-names: tom Wörden
+    given-names: Henrik
+    orcid: https://orcid.org/0000-0002-5549-578X
+  - family-names: Parlitz
+    given-names: Ulrich
+    orcid: https://orcid.org/0000-0003-3058-1435
+  - family-names: Luther
+    given-names: Stefan
+    orcid: https://orcid.org/0000-0001-7214-8125
+title: CaosDB - WebUI
+version: 0.4.2
+doi: 10.3390/data4020083
+date-released: 2021-12-06
\ No newline at end of file
diff --git a/RELEASE_GUIDELINES.md b/RELEASE_GUIDELINES.md
index e9a9bb8154c22648d602ceecc78ee41ac666e310..00f044e142a1d89efd764076e3b6c6c079133fc7 100644
--- a/RELEASE_GUIDELINES.md
+++ b/RELEASE_GUIDELINES.md
@@ -17,8 +17,10 @@ guidelines of the CaosDB Project
 
 2. Check all general prerequisites.
 
-3. Update `src/doc/conf.py` version and check that the correct caosdb-server
-   version is listed in `DEPENDENCIES.md`.
+3. Update the version:
+   - Update `src/doc/conf.py` version and check that the correct caosdb-server
+     version is listed in `DEPENDENCIES.md`.
+   - `CITATION.cff` (update version and date)
 
 4. Merge the release branch into the main branch.