diff --git a/.zenodo.json b/.zenodo.json
index 04f1212..89d276a 100644
--- a/.zenodo.json
+++ b/.zenodo.json
@@ -65,5 +65,5 @@
       "identifier": "quadriga"
     }
   ],
-  "version": "0.64.0"
+  "version": "0.64.1"
 }
\ No newline at end of file
diff --git a/CITATION.bib b/CITATION.bib
index 3892f22..7841b58 100644
--- a/CITATION.bib
+++ b/CITATION.bib
@@ -2,7 +2,7 @@ @book{Schnaitter_QUADRIGAOERTemplate_2026
   title     = {QUADRIGA-OER-Template. QUADRIGA Open Educational Resources: Template},
   author    = {Schnaitter, Hannes and Samoilova, Evgenia and Islam, Lamia},
   year      = {2026},
-  version   = {0.64.0},
+  version   = {0.64.1},
   doi       = {10.5281/zenodo.14970672},
   url       = {https://quadriga-dk.github.io/Book_Template/},
   copyright = {CC-BY-SA-4.0},
diff --git a/CITATION.cff b/CITATION.cff
index ceb1107..3ad7ea4 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -1,6 +1,6 @@
 # yaml-language-server: $schema=https://citation-file-format.github.io/1.2.0/schema.json
 cff-version: 1.2.0
-version: 0.64.0
+version: 0.64.1
 title: 'QUADRIGA-OER-Template. QUADRIGA Open Educational Resources: Template'
 type: software
 message: Please cite this software using the metadata from `preferred-citation` in
@@ -30,7 +30,7 @@ keywords: &id002
 - Data Literacy
 - Datenkompetenz
 - open-educational-resources
-license: CC BY-SA 4.0
+license: CC-BY-SA-4.0
 references:
 - title: Jupyter Book
   type: software
@@ -39,14 +39,14 @@ references:
     website: https://github.com/jupyter-book/jupyter-book/graphs/contributors
 preferred-citation:
   year: '2026'
-  version: 0.64.0
+  version: 0.64.1
   authors: *id001
   title: 'QUADRIGA-OER-Template. QUADRIGA Open Educational Resources: Template'
   type: book
   doi: 10.5281/zenodo.14970672
   url: https://quadriga-dk.github.io/Book_Template/
   repository-code: https://github.com/quadriga-dk/Book_Template
-  license: CC BY-SA 4.0
+  license: CC-BY-SA-4.0
   languages:
   - deu
   copyright: CC-BY-SA-4.0
diff --git a/metadata.jsonld b/metadata.jsonld
index 3d1ba12..17287fc 100644
--- a/metadata.jsonld
+++ b/metadata.jsonld
@@ -19,7 +19,7 @@
     "value": "10.5281/zenodo.14970672",
     "url": "https://doi.org/10.5281/zenodo.14970672"
   },
-  "version": "0.64.0",
+  "version": "0.64.1",
   "schemaVersion": "1.0.0",
   "url": "https://quadriga-dk.github.io/Book_Template/",
   "workExample": {
diff --git a/metadata.rdf b/metadata.rdf
index 9e764d7..42eb216 100644
--- a/metadata.rdf
+++ b/metadata.rdf
@@ -178,7 +178,7 @@ Förderkennzeichen: 16DKZ2034</schema:funding>
     <schema:schemaVersion>1.0.0</schema:schemaVersion>
     <schema:timeRequired>PT16H15M</schema:timeRequired>
     <schema:url rdf:resource="https://quadriga-dk.github.io/Book_Template/" />
-    <schema:version>0.64.0</schema:version>
+    <schema:version>0.64.1</schema:version>
     <schema:workExample>
       <schema:SoftwareSourceCode rdf:about="https://quadriga-dk.github.io/Book_Template/#repository">
         <schema:codeRepository rdf:resource="https://github.com/quadriga-dk/Book_Template" />
diff --git a/metadata.yml b/metadata.yml
index e1a7e9e..eddf3f4 100644
--- a/metadata.yml
+++ b/metadata.yml
@@ -89,7 +89,7 @@ chapters:
     blooms-category: 3 Anwenden
 date-issued: '2024-05-06'
 date-modified: '2026-05-11'
-version: 0.64.0
+version: 0.64.1
 context-of-creation: 'Die vorliegenden Open Educational Resources wurden durch das
   Datenkompetenzzentrum QUADRIGA erstellt.
 
@@ -104,4 +104,4 @@ license:
   code: https://opensource.org/licenses/AGPL-3.0
   content:
     url: https://creativecommons.org/licenses/by-sa/4.0/
-    name: CC BY-SA 4.0
+    name: CC-BY-SA-4.0