diff --git a/CHANGELOG.md b/CHANGELOG.md
index ded7b4004..8289c5bef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## [1.20.0](https://github.com/googleapis/google-auth-library-java/compare/v1.19.0...v1.20.0) (2023-09-19)
+
+
+### Features
+
+* Byoid metrics framework ([#1232](https://github.com/googleapis/google-auth-library-java/issues/1232)) ([38bdf60](https://github.com/googleapis/google-auth-library-java/commit/38bdf60189b44171f5d481fa934f4ece60553653))
+
+
+### Bug Fixes
+
+* Make derived classes of CredentialSource public ([#1236](https://github.com/googleapis/google-auth-library-java/issues/1236)) ([9bb9e0a](https://github.com/googleapis/google-auth-library-java/commit/9bb9e0a67c503415a69f35e390f6c64357fc7be1))
+
+
+### Documentation
+
+* Update library definitions in README to the latest version ([#1239](https://github.com/googleapis/google-auth-library-java/issues/1239)) ([0c5cff2](https://github.com/googleapis/google-auth-library-java/commit/0c5cff26fc66ad90d2dbccd374c6ead81f66d569))
+
 ## [1.19.0](https://github.com/googleapis/google-auth-library-java/compare/v1.18.0...v1.19.0) (2023-06-27)
 
 
diff --git a/appengine/pom.xml b/appengine/pom.xml
index 280af336e..7f26f8ee6 100644
--- a/appengine/pom.xml
+++ b/appengine/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.auth</groupId>
     <artifactId>google-auth-library-parent</artifactId>
-    <version>1.19.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
+    <version>1.20.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/bom/pom.xml b/bom/pom.xml
index 71cd8820d..1897ee928 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.auth</groupId>
   <artifactId>google-auth-library-bom</artifactId>
-  <version>1.19.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-bom:current} -->
+  <version>1.20.0</version><!-- {x-version-update:google-auth-library-bom:current} -->
   <packaging>pom</packaging>
   <name>Google Auth Library for Java BOM</name>
   <description>
diff --git a/credentials/pom.xml b/credentials/pom.xml
index a8c0d586f..aac1e7143 100644
--- a/credentials/pom.xml
+++ b/credentials/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.auth</groupId>
     <artifactId>google-auth-library-parent</artifactId>
-    <version>1.19.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
+    <version>1.20.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/oauth2_http/pom.xml b/oauth2_http/pom.xml
index 389ec2694..26ba1fad6 100644
--- a/oauth2_http/pom.xml
+++ b/oauth2_http/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>com.google.auth</groupId>
     <artifactId>google-auth-library-parent</artifactId>
-    <version>1.19.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
+    <version>1.20.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index 1935c88f9..0a4447ff3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.auth</groupId>
   <artifactId>google-auth-library-parent</artifactId>
-  <version>1.19.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
+  <version>1.20.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
   <packaging>pom</packaging>
   <name>Google Auth Library for Java</name>
   <description>Client libraries providing authentication and
diff --git a/versions.txt b/versions.txt
index 64eb46b91..1e912e03a 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,9 +1,9 @@
 # Format:
 # module:released-version:current-version
 
-google-auth-library:1.19.0:1.19.1-SNAPSHOT
-google-auth-library-bom:1.19.0:1.19.1-SNAPSHOT
-google-auth-library-parent:1.19.0:1.19.1-SNAPSHOT
-google-auth-library-appengine:1.19.0:1.19.1-SNAPSHOT
-google-auth-library-credentials:1.19.0:1.19.1-SNAPSHOT
-google-auth-library-oauth2-http:1.19.0:1.19.1-SNAPSHOT
+google-auth-library:1.20.0:1.20.0
+google-auth-library-bom:1.20.0:1.20.0
+google-auth-library-parent:1.20.0:1.20.0
+google-auth-library-appengine:1.20.0:1.20.0
+google-auth-library-credentials:1.20.0:1.20.0
+google-auth-library-oauth2-http:1.20.0:1.20.0