diff --git a/launch/GROOVE - build maven artifact.launch b/launch/GROOVE - build maven artifact.launch
index 01a9164ef..e8efc49b9 100644
--- a/launch/GROOVE - build maven artifact.launch	
+++ b/launch/GROOVE - build maven artifact.launch	
@@ -7,7 +7,7 @@
     <booleanAttribute key="M2_OFFLINE" value="false"/>
     <stringAttribute key="M2_PROFILES" value=""/>
     <listAttribute key="M2_PROPERTIES">
-        <listEntry value="revision=${string_prompt:Build version:0.0.0}"/>
+        <listEntry value="revision=${string_prompt:Build version}"/>
     </listAttribute>
     <stringAttribute key="M2_RUNTIME" value="EMBEDDED"/>
     <booleanAttribute key="M2_SKIP_TESTS" value="false"/>
diff --git a/launch/GROOVE - generate javadoc.launch b/launch/GROOVE - generate javadoc.launch
index 2e8c5adbe..cc9d098b5 100644
--- a/launch/GROOVE - generate javadoc.launch	
+++ b/launch/GROOVE - generate javadoc.launch	
@@ -6,7 +6,9 @@
     <booleanAttribute key="M2_NON_RECURSIVE" value="false"/>
     <booleanAttribute key="M2_OFFLINE" value="false"/>
     <stringAttribute key="M2_PROFILES" value=""/>
-    <listAttribute key="M2_PROPERTIES"/>
+    <listAttribute key="M2_PROPERTIES">
+        <listEntry value="revision=${string_prompt:Build version}"/>
+    </listAttribute>
     <stringAttribute key="M2_RUNTIME" value="EMBEDDED"/>
     <booleanAttribute key="M2_SKIP_TESTS" value="false"/>
     <intAttribute key="M2_THREADS" value="1"/>
diff --git a/launch/GROOVE - zip up.launch b/launch/GROOVE - zip up.launch
index 7b2f56df7..3b9c9aefd 100644
--- a/launch/GROOVE - zip up.launch	
+++ b/launch/GROOVE - zip up.launch	
@@ -7,7 +7,7 @@
     <booleanAttribute key="M2_OFFLINE" value="false"/>
     <stringAttribute key="M2_PROFILES" value=""/>
     <listAttribute key="M2_PROPERTIES">
-        <listEntry value="revision=${string_prompt:Build version:0.0.0}"/>
+        <listEntry value="revision=${string_prompt:Build version}"/>
     </listAttribute>
     <stringAttribute key="M2_RUNTIME" value="EMBEDDED"/>
     <booleanAttribute key="M2_SKIP_TESTS" value="false"/>
diff --git a/release/README.md b/release/README.md
index 2488e12c6..a0debba36 100644
--- a/release/README.md
+++ b/release/README.md
@@ -19,7 +19,7 @@ Below, the _release directory_ refers to the project subdirectory (of the `code`
     - `GXL_VERSION`: the name of the version of GXL currently used for the encoding of graphs. (This will rarely change.)
     - `JAVA_VERSION`: the version of Java to be used for the build.  
 
-2. Update the `include/CHANGES` file in the release directory
+2. Update the `include/CHANGES.md` file in the release directory
    to reflect all changes with respect to the previous release.
 
 3. [Optional] Update `include/usermanual.pdf` file in the groove-release project with the newest version of the manual.
@@ -35,9 +35,11 @@ Below, the _release directory_ refers to the project subdirectory (of the `code`
 1. Run the JUnit tests on the GROOVE source project, using the
    `GROOVE core - all JUnit tests` launch configuration.
    If you get errors complaining that the test packages are not in the module,
-   in Eclipse do Project -> Clean -> groove and try again. Only proceed if all tests pass.
+   in Eclipse do `Project -> Clean -> groove` and try again. Only proceed if all tests pass.
 
-## Building
+## Building [optional]
+
+(You can skip this step if you want, since it will actually also be done by github upon tagging.)
 
 2. Compile GROOVE by running Maven on the GROOVE source project
    (ensuring that all dependencies are Maven-based), using
diff --git a/release/include/CHANGES.md b/release/include/CHANGES.md
index bc0210524..9c722852b 100644
--- a/release/include/CHANGES.md
+++ b/release/include/CHANGES.md
@@ -3,6 +3,12 @@ GROOVE Change Log
 
 This document describes the major changes in the GROOVE tool set
 
+Release 6.8.1, 8 April 2024
+-------------------------------
+- Feature extension: rule nodes _only_ typed by a label variable are treated more
+  leniently
+- Bug fix (github #769)
+
 Release 6.8.0, 25 March 2024
 -------------------------------
 - Project moved to github.com/nl-utwente-groove
diff --git a/src/main/resources/nl/utwente/groove/resource/version/GROOVE_BUILD b/src/main/resources/nl/utwente/groove/resource/version/GROOVE_BUILD
index 1703edd5f..1970d89cc 100644
--- a/src/main/resources/nl/utwente/groove/resource/version/GROOVE_BUILD
+++ b/src/main/resources/nl/utwente/groove/resource/version/GROOVE_BUILD
@@ -1 +1 @@
-20240324
\ No newline at end of file
+20240408
\ No newline at end of file
diff --git a/src/main/resources/nl/utwente/groove/resource/version/GROOVE_VERSION b/src/main/resources/nl/utwente/groove/resource/version/GROOVE_VERSION
index 532a9d43b..5f6c0863a 100644
--- a/src/main/resources/nl/utwente/groove/resource/version/GROOVE_VERSION
+++ b/src/main/resources/nl/utwente/groove/resource/version/GROOVE_VERSION
@@ -1 +1 @@
-6.8.1-SNAPSHOT
+6.8.1