Also allow :

CHANGELOG.md

@@ -73,7 +73,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 - When importing a file using "Find Unlinked Files", when one or more file directories are available, the file path will be relativized where possible [koppor#549](https://github.com/koppor/jabref/issues/549)
 - We added minimum window sizing for windows dedicated to creating new entries [#11944](https://github.com/JabRef/jabref/issues/11944)
 - We changed the name of the library-based file directory from 'General File Directory' to 'Library-specific File Directory' per issue. [#571](https://github.com/koppor/jabref/issues/571)
-- We allow a dash (`-`) being part in a citation key. [#12144](https://github.com/JabRef/jabref/pull/12144)
+- We changed the defualt [unwanted charachters](https://docs.jabref.org/setup/citationkeypatterns#removing-unwanted-characters) in the citation key generator and allow a dash (`-`) and colon (`:`) being part of a citation key. [#12144](https://github.com/JabRef/jabref/pull/12144)
 - The CitationKey column is now a default shown column for the entry table. [#10510](https://github.com/JabRef/jabref/issues/10510)
 
 ### Fixed

src/main/java/org/jabref/logic/citationkeypattern/CitationKeyGenerator.java

@@ -32,7 +32,7 @@ public class CitationKeyGenerator extends BracketedPattern {
     /// Example: `ABC+`. See {@link org.jabref.logic.citationkeypattern.BracketedPatternTest#authorsAlpha()} for examples.
     ///
     /// See also #DISALLOWED_CHARACTERS
-    public static final String DEFAULT_UNWANTED_CHARACTERS = "`ʹ:!;?^";
+    public static final String DEFAULT_UNWANTED_CHARACTERS = "`ʹ!;?^";
 
     /// Source of disallowed characters: <https://tex.stackexchange.com/a/408548/9075>
     /// These characters are disallowed in BibTeX keys.