diff --git a/README.rst b/README.rst
index e8914cf..e825153 100644
--- a/README.rst
+++ b/README.rst
@@ -47,6 +47,6 @@ TODO
   - Add a real world example.
   - Investigate Jensen unexpected behaviour in simple example.
   - Currently the point set metrics are not symmetric since the iterations is only over one fo the point sets. Consider adding symmetric versions. Or document the assymetric behaviour well.
-   - A decorator to the PointSetToPointSetMetricv4 that overrides the accumulation of the value and derivative computation to use a trimmed number of points is in the module as well, but is as of yet not functional. The issue is access to protected members in the base class that I think would need to be fixed in the base class.
+  - A decorator to the PointSetToPointSetMetricv4 that overrides the accumulation of the value and derivative computation to use a trimmed number of points is in the module as well, but is as of yet not functional. The issue is access to protected members in the base class that I think would need to be fixed in the base class.
 
 
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index d81cda3..2b8e9cd 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -2,6 +2,9 @@ add_executable( TrimmedPointSetRegistrationExample TrimmedPointSetRegistrationEx
  
 target_link_libraries( TrimmedPointSetRegistrationExample ${ITK_LIBRARIES})
 
+target_include_directories( TrimmedPointSetRegistrationExample PRIVATE
+    "${CMAKE_CURRENT_SOURCE_DIR}/../include" )
+
 set_target_properties( TrimmedPointSetRegistrationExample  
     PROPERTIES
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/examples"
diff --git a/examples/TrimmedPointSetRegistrationExample.cxx b/examples/TrimmedPointSetRegistrationExample.cxx
index 70f157a..adeeeb0 100644
--- a/examples/TrimmedPointSetRegistrationExample.cxx
+++ b/examples/TrimmedPointSetRegistrationExample.cxx
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
@@ -113,14 +113,14 @@ void runRegistration( PointSetType::Pointer fixedPoints,
     PointType transformedMovingPoint =
             affineInverseTransform->TransformPoint( movingPoints->GetPoint( n ) );
     myfile << "Moving";
-    for(int i=0; i<PointType::PointDimension; i++)
+    for(unsigned int i=0; i<PointType::PointDimension; i++)
       {
       myfile << ", " << movingPoint[i];
       }
     myfile << std::endl;
 
     myfile << "MovingTransformed";
-    for(int i=0; i<PointType::PointDimension; i++)
+    for(unsigned int i=0; i<PointType::PointDimension; i++)
       {
       myfile << ", " << transformedMovingPoint[i];
       }
@@ -133,14 +133,14 @@ void runRegistration( PointSetType::Pointer fixedPoints,
     PointType transformedFixedPoint =
             affineSimple->GetModifiableTransform()->TransformPoint( fixedPoints->GetPoint( n ) );
     myfile << "Fixed";
-    for(int i=0; i<PointType::PointDimension; i++)
+    for(unsigned int i=0; i<PointType::PointDimension; i++)
       {
       myfile << ", " << fixedPoint[i];
       }
     myfile << std::endl;
 
     myfile << "FixedTransformed";
-    for(int i=0; i<PointType::PointDimension; i++)
+    for(unsigned int i=0; i<PointType::PointDimension; i++)
       {
       myfile << ", " << transformedFixedPoint[i];
       }
@@ -178,7 +178,7 @@ int main( int argc, char *argv[] )
 
   // Generate two noisy ellipses
   unsigned int nSourcePoints= 4000;
-  for(int i=0; i< nSourcePoints; i++ )
+  for(unsigned int i=0; i< nSourcePoints; i++ )
     {
     float radius = 100.0;
 
@@ -190,7 +190,7 @@ int main( int argc, char *argv[] )
     }
 
   unsigned int nTargetPoints= 4200;
-  for(int i=0; i< nTargetPoints; i++ )
+  for(unsigned int i=0; i< nTargetPoints; i++ )
     {
     float radius = 100.0;
 
diff --git a/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.h b/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.h
index 8af5014..af634ce 100644
--- a/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.h
+++ b/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.h
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
@@ -36,7 +36,7 @@ class ITK_TEMPLATE_EXPORT TrimmedEuclideanDistancePointSetToPointSetMetricv4
 : public EuclideanDistancePointSetToPointSetMetricv4<TFixedPointSet, TMovingPointSet, TInternalComputationValueType>
 {
 public:
-  ITK_DISALLOW_COPY_AND_ASSIGN(TrimmedEuclideanDistancePointSetToPointSetMetricv4);
+  ITK_DISALLOW_COPY_AND_MOVE(TrimmedEuclideanDistancePointSetToPointSetMetricv4);
 
   /** Standard class type aliases. */
   using Self = TrimmedEuclideanDistancePointSetToPointSetMetricv4;
@@ -206,7 +206,7 @@ class ITK_TEMPLATE_EXPORT TrimmedEuclideanDistancePointSetToPointSetMetricv4
       }
     else
       {
-      itkExceptionMacro( "Percentile value must belong to (0;100]." )
+      itkExceptionMacro( "Percentile value must belong to (0;100]." );
       }
     }
   itkGetMacro( Percentile, unsigned int );
@@ -222,7 +222,7 @@ class ITK_TEMPLATE_EXPORT TrimmedEuclideanDistancePointSetToPointSetMetricv4
       }
     else
       {
-      itkExceptionMacro( "Sampling percentage value must belong to (0;1]." )
+      itkExceptionMacro( "Sampling percentage value must belong to (0;1]." );
       }
     }
   itkGetMacro( SamplingRate, unsigned int );
diff --git a/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.hxx b/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.hxx
index 24a2e41..10395bd 100644
--- a/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.hxx
+++ b/include/itkTrimmedEuclideanDistancePointSetToPointSetMetricv4.hxx
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
@@ -186,7 +186,7 @@ TrimmedEuclideanDistancePointSetToPointSetMetricv4<TFixedPointSet, TMovingPointS
 
   //Collect derviatives at each point
   std::vector< PointDerivativeStorage > values( this->GetFixedTransformedPointSet()->GetNumberOfPoints() );
-  for(int i=0; i < values.size(); i++)
+  for(size_t i=0; i < values.size(); i++)
     {
     values[i].value = NumericTraits<MeasureType>::max();
     values[i].index = i;
@@ -223,7 +223,7 @@ TrimmedEuclideanDistancePointSetToPointSetMetricv4<TFixedPointSet, TMovingPointS
     /* Verify the virtual point is in the virtual domain.
      * If user hasn't defined a virtual space, and the active transform is not
      * a displacement field transform type, then this will always return true. */
-    for(int index = ranges[rangeIndex].first; index<ranges[rangeIndex].second; index++)
+    for(PointIdentifier index = ranges[rangeIndex].first; index<ranges[rangeIndex].second; index++)
       {
 
       if(this->m_SamplingRate < 1.0 )
@@ -314,7 +314,7 @@ TrimmedEuclideanDistancePointSetToPointSetMetricv4<TFixedPointSet, TMovingPointS
     const VirtualVectorContainer &virtualTransformedPointSet =
       this->GetVirtualTransformedPointSet()->GetPoints()->CastToSTLConstContainer();
     unsigned int nValidDistances = 0;
-    for( int valueIndex=0; valueIndex < last_index; valueIndex++)
+    for( size_t valueIndex=0; valueIndex < last_index; valueIndex++)
       {
       PointDerivativeStorage &el = values[valueIndex];
       PointIdentifier pointIndex = el.index;
diff --git a/include/itkTrimmedPointSetToPointSetMetricv4.h b/include/itkTrimmedPointSetToPointSetMetricv4.h
index 17e2fea..bda0b5d 100644
--- a/include/itkTrimmedPointSetToPointSetMetricv4.h
+++ b/include/itkTrimmedPointSetToPointSetMetricv4.h
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
@@ -34,7 +34,7 @@ class ITK_TEMPLATE_EXPORT TrimmedPointSetToPointSetMetricv4
 : public EuclideanDistancePointSetToPointSetMetricv4<TFixedPointSet, TMovingPointSet, TInternalComputationValueType>
 {
 public:
-  ITK_DISALLOW_COPY_AND_ASSIGN(TrimmedPointSetToPointSetMetricv4);
+  ITK_DISALLOW_COPY_AND_MOVE(TrimmedPointSetToPointSetMetricv4);
 
   /** Standard class type aliases. */
   using Self = TrimmedPointSetToPointSetMetricv4;
@@ -362,7 +362,7 @@ class ITK_TEMPLATE_EXPORT TrimmedPointSetToPointSetMetricv4
     }
   */
   itkSetObjectMacro(Metric, Superclass);
-  itkGetConstObjectMacro(Metric, Superclass)
+  itkGetConstObjectMacro(Metric, Superclass);
 
 
   void SetFixedTransform( FixedTransformType *fixed) override
@@ -393,7 +393,7 @@ class ITK_TEMPLATE_EXPORT TrimmedPointSetToPointSetMetricv4
       }
     else
       {
-      itkExceptionMacro( "Percentile value must belong to (0;100]." )
+      itkExceptionMacro( "Percentile value must belong to (0;100]." );
       }
     }
   itkGetMacro( Percentile, unsigned int );
diff --git a/include/itkTrimmedPointSetToPointSetMetricv4.hxx b/include/itkTrimmedPointSetToPointSetMetricv4.hxx
index 841eb19..bcf1329 100644
--- a/include/itkTrimmedPointSetToPointSetMetricv4.hxx
+++ b/include/itkTrimmedPointSetToPointSetMetricv4.hxx
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
diff --git a/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.h b/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.h
index d3902ca..2ef23a2 100644
--- a/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.h
+++ b/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.h
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
@@ -33,7 +33,7 @@ class ITK_TEMPLATE_EXPORT WeightedEuclideanDistancePointSetToPointSetMetricv4:
   public PointSetToPointSetMetricv4<TFixedPointSet, TMovingPointSet, TInternalComputationValueType>
 {
 public:
-  ITK_DISALLOW_COPY_AND_ASSIGN(WeightedEuclideanDistancePointSetToPointSetMetricv4);
+  ITK_DISALLOW_COPY_AND_MOVE(WeightedEuclideanDistancePointSetToPointSetMetricv4);
 
   /** Standard class type aliases. */
   using Self = WeightedEuclideanDistancePointSetToPointSetMetricv4;
diff --git a/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.hxx b/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.hxx
index 3099a30..a098322 100644
--- a/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.hxx
+++ b/include/itkWeightedEuclideanDistancePointSetToPointSetMetricv4.hxx
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
diff --git a/pyproject.toml b/pyproject.toml
index fdbc4fe..c4f17af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,7 +36,7 @@ classifiers = [
 ]
 requires-python = ">=3.8"
 dependencies = [
-    "itk == 5.4.*",
+    "itk >= 5.4",
 ]
 
 [project.urls]
diff --git a/test/itkTrimmedEuclideanDistancePointSetRegistrationTest.cxx b/test/itkTrimmedEuclideanDistancePointSetRegistrationTest.cxx
index 4ce4b70..44480ae 100644
--- a/test/itkTrimmedEuclideanDistancePointSetRegistrationTest.cxx
+++ b/test/itkTrimmedEuclideanDistancePointSetRegistrationTest.cxx
@@ -6,7 +6,7 @@
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
- *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *         https://www.apache.org/licenses/LICENSE-2.0.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
@@ -99,7 +99,7 @@ int itkTrimmedEuclideanDistancePointSetRegistrationTest( int argc, char *argv[]
 
   // Generate two noisy ellipses
   unsigned int nSourcePoints= 1000;
-  for(int i=0; i< nSourcePoints; i++ )
+  for(unsigned int i=0; i< nSourcePoints; i++ )
     {
     float radius = 100.0;
 
@@ -111,7 +111,7 @@ int itkTrimmedEuclideanDistancePointSetRegistrationTest( int argc, char *argv[]
     }
 
   unsigned int nTargetPoints= 1200;
-  for(int i=0; i< nTargetPoints; i++ )
+  for(unsigned int i=0; i< nTargetPoints; i++ )
     {
     float radius = 100.0;