diff --git a/.gitignore b/.gitignore
index f65949b..9f41526 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,5 @@ target
 *.pyc
 build.log
 **/*.versionsBackup
-.DS_Store
\ No newline at end of file
+.DS_Store
+logdir*
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3058af..199e727 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 ## Unreleased
 
 * Fixed a bug for Java 11 compatibility
+* Changed Jenkins Maven repo URL from http:// to https://
+* The LocalProjectPipelineExtensionDetectorSpec#getClassesOfTypeInPackage method now finds classes that are 
+  descendants of `java.lang.Object` but aren't direct subtypes. 
 
 ## 2.1.5
 
diff --git a/examples/helper-script/pom.xml b/examples/helper-script/pom.xml
index e1d28f2..4d44970 100644
--- a/examples/helper-script/pom.xml
+++ b/examples/helper-script/pom.xml
@@ -15,12 +15,12 @@
 		<repository>
 			<id>jenkins-releases</id>
 			<name>Jenkins Releases</name>
-			<url>http://repo.jenkins-ci.org/releases</url>
+			<url>https://repo.jenkins-ci.org/releases</url>
 		</repository>
 		<repository>
 			<id>jenkins-public</id>
 			<name>Jenkins Public</name>
-			<url>http://repo.jenkins-ci.org/public</url>
+			<url>https://repo.jenkins-ci.org/public</url>
 		</repository>
 	</repositories>
 	
diff --git a/examples/shared-library/pom.xml b/examples/shared-library/pom.xml
index 11da360..cbf3da5 100644
--- a/examples/shared-library/pom.xml
+++ b/examples/shared-library/pom.xml
@@ -15,12 +15,12 @@
 		<repository>
 			<id>jenkins-releases</id>
 			<name>Jenkins Releases</name>
-			<url>http://repo.jenkins-ci.org/releases</url>
+			<url>https://repo.jenkins-ci.org/releases</url>
 		</repository>
 		<repository>
 			<id>jenkins-public</id>
 			<name>Jenkins Public</name>
-			<url>http://repo.jenkins-ci.org/public</url>
+			<url>https://repo.jenkins-ci.org/public</url>
 		</repository>
 	</repositories>
 	
diff --git a/examples/whole-pipeline/pom.xml b/examples/whole-pipeline/pom.xml
index 101748f..d4b8f82 100644
--- a/examples/whole-pipeline/pom.xml
+++ b/examples/whole-pipeline/pom.xml
@@ -15,12 +15,12 @@
 		<repository>
 			<id>jenkins-releases</id>
 			<name>Jenkins Releases</name>
-			<url>http://repo.jenkins-ci.org/releases</url>
+			<url>https://repo.jenkins-ci.org/releases</url>
 		</repository>
 		<repository>
 			<id>jenkins-public</id>
 			<name>Jenkins Public</name>
-			<url>http://repo.jenkins-ci.org/public</url>
+			<url>https://repo.jenkins-ci.org/public</url>
 		</repository>
 	</repositories>
 	
diff --git a/pom.xml b/pom.xml
index a78bb11..125e1de 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,7 +41,12 @@
 		<repository>
 			<id>jenkins-releases</id>
 			<name>Jenkins Releases</name>
-			<url>http://repo.jenkins-ci.org/releases</url>
+			<url>https://repo.jenkins-ci.org/releases</url>
+		</repository>
+		<repository>
+			<id>repo.jenkins-ci.org</id>
+			<name>Jenkins Repo</name>
+			<url>https://repo.jenkins-ci.org/public</url>
 		</repository>
 	</repositories>
 
@@ -271,12 +276,6 @@
 			<version>${objenesis.version}</version>
 		</dependency>
 
-		<dependency>
-			<groupId>org.reflections</groupId>
-			<artifactId>reflections</artifactId>
-			<version>0.9.12</version>
-		</dependency>
-
 		<dependency>
 			<groupId>io.github.classgraph</groupId>
 			<artifactId>classgraph</artifactId>
@@ -419,10 +418,10 @@
 
 		<!-- 'parallel' step comes from workflow-cps -->
 
-		<!-- 
+		<!--
 			for mocking the Jenkins singleton outside Spock
 			Only done to verify that IF that is done properly, THEN
-			jenkins-spock can use that object 
+			jenkins-spock can use that object
 		-->
 		<dependency>
 			<groupId>org.mockito</groupId>
@@ -436,7 +435,6 @@
 	<build>
 		<pluginManagement>
 			<plugins>
-
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-assembly-plugin</artifactId>
@@ -477,7 +475,7 @@
 					<artifactId>maven-dependency-plugin</artifactId>
 					<configuration>
 						<usedDependencies>
-							<!-- these will be used by Groovy code, when the included test utilities 
+							<!-- these will be used by Groovy code, when the included test utilities
 								are spun up during a test run -->
 							<usedDependency>cglib:cglib-nodep</usedDependency>
 							<usedDependency>junit:junit</usedDependency>
diff --git a/src/main/java/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetector.java b/src/main/java/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetector.java
index 30a796c..cb2a6a6 100644
--- a/src/main/java/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetector.java
+++ b/src/main/java/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetector.java
@@ -18,18 +18,17 @@
 package com.homeaway.devtools.jenkins.testing;
 
 import java.lang.annotation.Annotation;
-import java.util.HashMap;
 import java.util.HashSet;
+import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Optional;
 import java.util.Set;
 
-import org.reflections.Reflections;
-import org.reflections.ReflectionsException;
-import org.reflections.scanners.SubTypesScanner;
-import org.reflections.util.ClasspathHelper;
-import org.reflections.util.ConfigurationBuilder;
+import groovy.lang.Closure;
+import io.github.classgraph.ClassGraph;
+import io.github.classgraph.ScanResult;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -51,38 +50,26 @@ public class LocalProjectPipelineExtensionDetector extends APipelineExtensionDet
 	@Override
 	public Set<Class<?>> getClassesOfTypeInPackage(Class<?> _supertype, Optional<String> _package) {
 
-		Set<Class<?>> classes = new HashSet<>();
-
-		Map<String, Throwable> failures = new HashMap<>();
-
-		Reflections reflector = new Reflections(
-			new ConfigurationBuilder()
-			.setScanners(new SubTypesScanner(false))
-			.setUrls(ClasspathHelper.forPackage(_package.orElse(""))));
-
-		Set<String> all_types = new HashSet<>();
-
-		try {
-			all_types = reflector.getAllTypes();
-		} catch( ReflectionsException re ) {
-			if( re.getMessage().contains( "Couldn't find subtypes of Object." ) ) {
-				// this can happen if there are no classes local to the project.
-				// the full error message is
-				//     Couldn't find subtypes of Object.
-				//     Make sure SubTypesScanner initialized to include Object class - new SubTypesScanner(false)
-				// which we have done above, so that is NOT the actual cause.
-				// If there are no classes local to the project, that's OK!
-				// Just use an empty set instead of throwing an exception.
-				LOG.info( "Looks like there aren't any classes compiled by this project." );
-			} else {
-				// We still do want to error with "real" exceptions, though.
-				throw re;
-			}
+		List<String> classnames;
+		try (
+			ScanResult scanResult = new ClassGraph()
+				.acceptPackages(_package.orElse(""))
+				.disableJarScanning()
+				.scan()
+		) {
+			classnames = scanResult
+				.getAllClasses()
+				.filter(ci -> !ci.extendsSuperclass(Closure.class.getName()))
+				.filter(ci -> !ci.extendsSuperclass("spock.lang.Specification"))
+			 	.filter(ci -> !(ci.extendsSuperclass(InvalidlyNamedScriptWrapper.class.getName()) || ci.getName().equals(InvalidlyNamedScriptWrapper.class.getName())))
+				.filter(ci -> ci.extendsSuperclass(_supertype.getName()))
+				.getNames();
 		}
 
-		for(String classname : all_types ) {
-
-			Class<?> clazz = null;
+		Set<Class<?>> classes = new HashSet<>();
+		Map<String, Throwable> failures = new HashMap<>();
+		for(String classname : classnames ) {
+			Class<?> clazz;
 
 			try {
 				clazz = Class.forName( classname );
@@ -90,7 +77,6 @@ public Set<Class<?>> getClassesOfTypeInPackage(Class<?> _supertype, Optional<Str
 				failures.put( classname, e );
 				continue;
 			}
-
 			classes.add( clazz );
 		}
 
@@ -114,12 +100,17 @@ public Set<Class<?>> getClassesOfTypeInPackage(Class<?> _supertype, Optional<Str
 	@Override
 	public Set<Class<?>> getClassesWithAnnotationOfTypeInPackage( Class<? extends Annotation> _annotation, Class<?> _supertype, Optional<String> _package) {
 
-		Set<Class<?>> annotated_classes = new HashSet<>();
-
-		for( Class<?> annotated_class : new Reflections( _package.orElse("") ).getTypesAnnotatedWith( _annotation ) ) {
-			if( _supertype.isAssignableFrom( annotated_class ) ) {
-				annotated_classes.add( annotated_class );
-			}
+		Set<Class<?>> annotated_classes;
+		try (
+			ScanResult scanResult = new ClassGraph()
+				.acceptPackages(_package.orElse(""))
+				.enableAnnotationInfo()
+				.scan()
+		) {
+			annotated_classes = new HashSet<>(scanResult
+				.getClassesWithAnnotation(_annotation.getName())
+				.filter(ci -> ci.extendsSuperclass(_supertype.getName()))
+				.loadClasses(true));
 		}
 
 		return annotated_classes;
diff --git a/src/main/java/com/homeaway/devtools/jenkins/testing/WholeClasspathPipelineExtensionDetector.java b/src/main/java/com/homeaway/devtools/jenkins/testing/WholeClasspathPipelineExtensionDetector.java
index 370a81e..0541b94 100644
--- a/src/main/java/com/homeaway/devtools/jenkins/testing/WholeClasspathPipelineExtensionDetector.java
+++ b/src/main/java/com/homeaway/devtools/jenkins/testing/WholeClasspathPipelineExtensionDetector.java
@@ -25,10 +25,11 @@
 import java.util.Optional;
 import java.util.Set;
 
+import io.github.classgraph.ClassGraph;
+import io.github.classgraph.ScanResult;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import io.github.classgraph.ClassGraph;
 
 /**
  * Search through classes in the entire classpath for Jenkins Pipeline extensions.
@@ -44,14 +45,19 @@ public class WholeClasspathPipelineExtensionDetector extends APipelineExtensionD
 	@Override
 	public Set<Class<?>> getClassesOfTypeInPackage(Class<?> _supertype, Optional<String> _package) {
 
-		Set<Class<?>> classes = new HashSet<>();
-
-		List<String> classnames = new ClassGraph()
-			.enableAnnotationInfo()
-			.enableClassInfo()
-			.acceptPackages(_package.orElse(""))
-			.scan().getAllStandardClasses().getNames();
+		List<String> classnames;
+		try (
+			ScanResult scanResult = new ClassGraph()
+				.acceptPackages(_package.orElse(""))
+				.scan()
+		) {
+			classnames = scanResult
+				.getAllClasses()
+				.filter(ci -> ci.extendsSuperclass(_supertype.getName()))
+				.getNames();
+		}
 
+		Set<Class<?>> classes = new HashSet<>();
 		HashMap<String, Throwable> failures = new HashMap<>();
 
 		for(String classname: classnames) {
@@ -60,7 +66,7 @@ public Set<Class<?>> getClassesOfTypeInPackage(Class<?> _supertype, Optional<Str
 
 			try {
 				clazz = Class.forName( classname );
-			} catch( ClassNotFoundException e ) {
+			} catch( ClassNotFoundException | NoClassDefFoundError e ) {
 				failures.put( classname, e );
 				continue;
 			} catch( Throwable t ) {
@@ -94,16 +100,22 @@ public Set<Class<?>> getClassesOfTypeInPackage(Class<?> _supertype, Optional<Str
 	@Override
 	public Set<Class<?>> getClassesWithAnnotationOfTypeInPackage( Class<? extends Annotation> _annotation, Class<?> _supertype, Optional<String> _package) {
 
-		Set<Class<?>> annotated_classes = new HashSet<>();
+		List<String> annotated_classnames;
+		try (
+			ScanResult scanResult = new ClassGraph()
+				.acceptPackages(_package.orElse(""))
+				.enableAnnotationInfo()
+				.scan();
+		) {
+			annotated_classnames = scanResult
+				.getClassesWithAnnotation(_annotation.getName())
+				.filter(ci -> ci.extendsSuperclass(_supertype.getName()))
+				.getNames();
+		}
 
+		Set<Class<?>> annotated_classes = new HashSet<>();
 		HashMap<String, Throwable> failures = new HashMap<>();
 
-		List<String> annotated_classnames = new ClassGraph()
-			.enableAnnotationInfo()
-			.enableClassInfo()
-			.acceptPackages(_package.orElse(""))
-			.scan().getClassesWithAnnotation( _annotation.getName() ).getNames();
-
 		for(String classname: annotated_classnames) {
 
 			Class<?> clazz = null;
diff --git a/src/test/groovy/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetectorSpec.groovy b/src/test/groovy/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetectorSpec.groovy
new file mode 100644
index 0000000..d94e93b
--- /dev/null
+++ b/src/test/groovy/com/homeaway/devtools/jenkins/testing/LocalProjectPipelineExtensionDetectorSpec.groovy
@@ -0,0 +1,18 @@
+package com.homeaway.devtools.jenkins.testing
+
+import com.homeaway.devtools.jenkins.testing.functions.ScriptToTest
+
+class LocalProjectPipelineExtensionDetectorSpec extends JenkinsPipelineSpecification {
+
+    def "LocalProjectPipelineExtensionDetectorSpec should detect classes that aren't direct subtypes of java-lang-Object" () {
+        when:
+        Set<Class<?>> classes = new LocalProjectPipelineExtensionDetector()
+            .getClassesOfTypeInPackage(
+                Object.class,
+                Optional.<String>empty()
+            )
+
+        then:
+        classes.contains(ScriptToTest)
+    }
+}
diff --git a/src/test/groovy/com/homeaway/devtools/jenkins/testing/functions/ScriptToTest.groovy b/src/test/groovy/com/homeaway/devtools/jenkins/testing/functions/ScriptToTest.groovy
new file mode 100644
index 0000000..8ef1383
--- /dev/null
+++ b/src/test/groovy/com/homeaway/devtools/jenkins/testing/functions/ScriptToTest.groovy
@@ -0,0 +1,5 @@
+package com.homeaway.devtools.jenkins.testing.functions
+
+def helloWorld(String argument) {
+    echo argument
+}