diff --git a/org.jgrapes.util/bnd.bnd b/org.jgrapes.util/bnd.bnd
index 15738f397f..85ec917b94 100644
--- a/org.jgrapes.util/bnd.bnd
+++ b/org.jgrapes.util/bnd.bnd
@@ -9,16 +9,15 @@ Export-Package: \
 	org.jgrapes.util;version="${api_version}",\
 	org.jgrapes.util.events;version="${api_version}"
 
--privatepackage: \
-    com.electronwill.nightconfig.core,\
-    com.electronwill.nightconfig.core.conversion,\
-    com.electronwill.nightconfig.core.file,\
-    com.electronwill.nightconfig.core.io,\
-    com.electronwill.nightconfig.core.utils,\
-    com.electronwill.nightconfig.json,\
-    com.electronwill.nightconfig.toml,\
-    com.electronwill.nightconfig.yaml
-    
+# Restrict nightconfig versions. Starting with 3.7, OSGi is no
+# longer supported.  
+Import-Package: com.electronwill.nightconfig.core;version="[3.6.7,3.7.0)",\
+    com.electronwill.nightconfig.core.file;version="[3.6.7,3.7.0)",\
+    com.electronwill.nightconfig.json;version="[3.6.7,3.7.0)",\
+    com.electronwill.nightconfig.toml;version="[3.6.7,3.7.0)",\
+    com.electronwill.nightconfig.yaml;version="[3.6.7,3.7.0)",\
+    *
+
 -sources: true
 
 -dsannotations: 
diff --git a/org.jgrapes.util/build.gradle b/org.jgrapes.util/build.gradle
index c8d7c56a7e..15353862e1 100644
--- a/org.jgrapes.util/build.gradle
+++ b/org.jgrapes.util/build.gradle
@@ -1,12 +1,12 @@
 dependencies {
 	api project(':org.jgrapes.core')
 	
-	implementation 'com.electronwill.night-config:core:[3.7.0,4)'
-    implementation 'com.electronwill.night-config:json:[3.7.0,4)'
-    implementation 'com.electronwill.night-config:toml:[3.7.0,4)'
-    implementation 'com.electronwill.night-config:yaml:[3.7.0,4)'
+	implementation 'com.electronwill.night-config:core:[3.6.7,3.7.0)'
+    implementation 'com.electronwill.night-config:json:[3.6.7,3.7.0)'
+    implementation 'com.electronwill.night-config:toml:[3.6.7,3.7.0)'
+    implementation 'com.electronwill.night-config:yaml:[3.6.7,3.7.0)'
     // https://security.snyk.io/package/maven/org.yaml:snakeyaml
-    implementation 'org.yaml:snakeyaml:[1.33,2]'
+    implementation 'org.yaml:snakeyaml:[1.33,2)'
 
     testImplementation 'org.jdrupes.json:json:[2.0.0,2.1.0)'
 	testRuntimeOnly project.files('test-resources')