diff --git a/book/pom.xml b/book/pom.xml
index d9a405c..21c8987 100644
--- a/book/pom.xml
+++ b/book/pom.xml
@@ -219,7 +219,7 @@ along with ao-collections.  If not, see <https://www.gnu.org/licenses/>.
         <groupId>com.aoapps</groupId><artifactId>ao-io-buffer</artifactId><version>4.1.0${POST-SNAPSHOT}</version>
       </dependency>
       <dependency>
-        <groupId>com.aoapps</groupId><artifactId>ao-lang</artifactId><version>5.5.0${POST-SNAPSHOT}</version>
+        <groupId>com.aoapps</groupId><artifactId>ao-lang</artifactId><version>5.5.1${POST-SNAPSHOT}</version>
       </dependency>
       <dependency>
         <groupId>com.aoapps</groupId><artifactId>ao-net-types</artifactId><version>2.0.2${POST-SNAPSHOT}</version>
diff --git a/pom.xml b/pom.xml
index 9e6f056..b40a96f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -236,7 +236,7 @@ along with ao-collections.  If not, see <https://www.gnu.org/licenses/>.
     <dependencies>
       <!-- Direct -->
       <dependency>
-        <groupId>com.aoapps</groupId><artifactId>ao-lang</artifactId><version>5.5.0${POST-SNAPSHOT}</version>
+        <groupId>com.aoapps</groupId><artifactId>ao-lang</artifactId><version>5.5.1${POST-SNAPSHOT}</version>
       </dependency>
       <dependency>
         <groupId>org.apache.commons</groupId><artifactId>commons-collections4</artifactId><version>${commons-collections4.version}</version>