diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e537e9..df70503 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,48 @@
 # Metadata Quality Assessment Framework API Changelog
 
+## v0.9.3 (2023-07-14)
+
+Important API change:
+- in `pattern` the tool use find() instead of matches(), so one should not specify a complex pattern from the beginning to the end
+
+The release contains dependency updates.
+
+The artefacts of the release are available in Maven Central as well: https://central.sonatype.dev/artifact/de.gwdg.metadataqa/metadata-qa-api/0.9.3
+
+## v0.9.2 (2023-06-09)
+
+- Set AND, NOT, OR NA if the data is NA.
+
+## v0.9.1 (2023-05-16)
+
+- rename PathCache to Selector
+- adding constants for using in QA catalogue
+- update dependencies and adapt code to the API changes
+
+## v0.9.0 (2022-11-21)
+
+This release contains the results of two important developments adding a command line interface created by 
+Miel Vander Sande (@mielvds) and applying the framework on the data of Deutsche Digitale Bibliothek. These two 
+developments made the tool more robust, and more flexible so became applicable to different situations.
+
+To use the command line interface, download mqa and metadata-qa-api-0.9.0-shaded.jar, and follow the suggestions of the README.md file.
+
+new rules:
+- unique: checks if the value of the field is unique
+- dependencies: checks if other rules has already checked and passed
+- dimension: checks if a linked image fits to some dimension constraints (unit in pixel)
+- hidden: if the rule is hidden it will be calculated, but its output will not be present in the overall output
+- skip: prevents a particular rule to be part of calculation
+- debug: log the rule ID, value and result
+
+The schema is called MQA Schema. Some instances are available in the metadata-qa-ddb repository: https://github.com/pkiraly/metadata-qa-ddb/tree/main/src/main/resources
+
+Important API changes:
+- the JsonBranch class has been renamed to DataElement
+- the OaiPmhXPath class has been renamed to XPathWrapper
+
+The artefacts of the release are available in Maven Central as well: https://central.sonatype.dev/artifact/de.gwdg.metadataqa/metadata-qa-api/0.9.0
+
 ## v0.8 (2022-03-16)
 
 - improve the rule checking mechanisms: adding IDs, minWords and maxWords checkers, content type checker, optimizing OR checker and range rules, successScore and failureScore
diff --git a/README.md b/README.md
index c6b6658..62c782e 100644
--- a/README.md
+++ b/README.md
@@ -649,7 +649,8 @@ Example: the value should be either "dataverse", "dataset" or "file".
 
 ##### `pattern <regular expression>`
 A regular expression that each field value matches to satisfy the condition.
-The expression should cover the whole string, not only a part of it
+The expression can match a a part of the whole string (see the Java Matcher 
+object's [find](https://docs.oracle.com/javase/8/docs/api/java/util/regex/Matcher.html#find--) method).
 (API: `setPattern(String)` or `withPattern(String)`)
 
 Example: the field value should start with http:// or https:// and end with
diff --git a/pom.xml b/pom.xml
index 612ad32..96c5e14 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
   <groupId>de.gwdg.metadataqa</groupId>
   <artifactId>metadata-qa-api</artifactId>
   <packaging>jar</packaging>
-  <version>0.9.3-SNAPSHOT</version>
+  <version>0.9.3</version>
   <name>Metadata Quality Assurance Framework API</name>
   <description>
     A metadata quality assurance framework. It checks some metrics of 
diff --git a/src/test/java/de/gwdg/metadataqa/api/cli/VersionTest.java b/src/test/java/de/gwdg/metadataqa/api/cli/VersionTest.java
index c7f3e71..ebf0b01 100644
--- a/src/test/java/de/gwdg/metadataqa/api/cli/VersionTest.java
+++ b/src/test/java/de/gwdg/metadataqa/api/cli/VersionTest.java
@@ -6,7 +6,7 @@
 
 public class VersionTest {
 
-  private final String EXPECTED_VERSION = "0.9.3-SNAPSHOT";
+  private final String EXPECTED_VERSION = "0.9.3";
   ;
 
   @Test