diff --git a/build.gradle b/build.gradle
index dc523188..bb7c31bd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 
 ext {
     // current versions of libraries:
-    lbjVersion = '18.5.2'
+    lbjVersion = '18.6.0'
     lwjglVersion = '3.3.3'
 }
 
diff --git a/docs/en/modules/ROOT/pages/add.adoc b/docs/en/modules/ROOT/pages/add.adoc
index 5186c2fd..c3a18bc9 100644
--- a/docs/en/modules/ROOT/pages/add.adoc
+++ b/docs/en/modules/ROOT/pages/add.adoc
@@ -29,7 +29,7 @@ repositories {
     mavenCentral()
 }
 dependencies {
-    implementation 'com.github.stephengold:Libbulletjme:18.4.0'
+    implementation 'com.github.stephengold:Libbulletjme:18.6.0'
 }
 ----
 
@@ -52,7 +52,7 @@ Add to the project's "pom.xml" file:
 <dependency>
   <groupId>com.github.stephengold</groupId>
   <artifactId>Libbulletjme</artifactId>
-  <version>18.4.0</version>
+  <version>18.6.0</version>
 </dependency>
 ----
 
@@ -62,7 +62,7 @@ Download the {Project} library from GitHub:
 
 * https://github.com/stephengold/Libbulletjme/releases/latest
 
-You'll definitely need the class JAR ("Libbulletjme-18.4.0.jar")
+You'll definitely need the class JAR ("Libbulletjme-18.6.0.jar")
 and probably the "-sources" and "-javadoc" JARs as well.
 
 Open the project's properties in the NetBeans IDE:
@@ -74,15 +74,15 @@ Open the project's properties in the NetBeans IDE:
 . Add the Heart class JAR:
 .. Click on the btn:[Add JAR/Folder] button.
 .. Navigate to the download directory.
-.. Select the "Libbulletjme-18.4.0" file.
+.. Select the "Libbulletjme-18.6.0" file.
 .. Click on the btn:[Open] button.
 . (optional) Add JARs for javadoc and sources:
 .. Click on the btn:[Edit] button.
 .. Click on the btn:[Browse...] button to the right of "Javadoc:"
-.. Select the "Libbulletjme-18.4.0-javadoc.jar" file.
+.. Select the "Libbulletjme-18.6.0-javadoc.jar" file.
 .. Click on the btn:[Open] button.
 .. Click on the btn:[Browse...] button to the right of "Sources:"
-.. Select the "Libbulletjme-18.4.0-sources.jar" file.
+.. Select the "Libbulletjme-18.6.0-sources.jar" file.
 .. Click on the btn:[Open] button button again.
 .. Click on the btn:[OK] button to close the "Edit Jar Reference" dialog.
 . Click on the btn:[OK] button to exit the "Project Properties" dialog.
diff --git a/docs/en/modules/ROOT/pages/build.adoc b/docs/en/modules/ROOT/pages/build.adoc
index 32573d08..67310869 100644
--- a/docs/en/modules/ROOT/pages/build.adoc
+++ b/docs/en/modules/ROOT/pages/build.adoc
@@ -33,7 +33,7 @@ Here's the recommended procedure:
 .. using Git:
 ... `git clone https://github.com/stephengold/Libbulletjme.git`
 ... `cd Libbulletjme`
-... `git checkout -b latest 18.4.0`
+... `git checkout -b latest 18.6.0`
 .. using a web browser:
 ... browse to https://github.com/stephengold/Libbulletjme/releases/latest
 ... follow the "Source code (zip)" link