diff --git a/org.rdkit.knime.bin.linux.x86_64/META-INF/MANIFEST.MF b/org.rdkit.knime.bin.linux.x86_64/META-INF/MANIFEST.MF
index cd332f8b..a4ac5419 100644
--- a/org.rdkit.knime.bin.linux.x86_64/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.bin.linux.x86_64/META-INF/MANIFEST.MF
@@ -2,8 +2,8 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: RDKit binaries for 64bit Linux
 Bundle-SymbolicName: org.rdkit.knime.bin.linux.x86_64;singleton:=true
-Bundle-Version: 4.4.0.qualifier
-Fragment-Host: org.rdkit.knime.types;bundle-version="4.4.0"
+Bundle-Version: 4.4.1.qualifier
+Fragment-Host: org.rdkit.knime.types;bundle-version="4.4.1"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Eclipse-PlatformFilter: (&(osgi.os=linux)(osgi.arch=x86_64))
 Bundle-Vendor: NIBR
diff --git a/org.rdkit.knime.bin.macosx.x86_64/META-INF/MANIFEST.MF b/org.rdkit.knime.bin.macosx.x86_64/META-INF/MANIFEST.MF
index 0e34fda0..252a1905 100644
--- a/org.rdkit.knime.bin.macosx.x86_64/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.bin.macosx.x86_64/META-INF/MANIFEST.MF
@@ -2,8 +2,8 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: RDKit binaries for 64bit MacOSX
 Bundle-SymbolicName: org.rdkit.knime.bin.macosx.x86_64;singleton:=true
-Bundle-Version: 4.4.0.qualifier
-Fragment-Host: org.rdkit.knime.types;bundle-version="4.4.0"
+Bundle-Version: 4.4.1.qualifier
+Fragment-Host: org.rdkit.knime.types;bundle-version="4.4.1"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Eclipse-PlatformFilter: (&(osgi.os=macosx)(osgi.arch=x86_64))
 Bundle-Vendor: NIBR
diff --git a/org.rdkit.knime.bin.win32.x86_64/META-INF/MANIFEST.MF b/org.rdkit.knime.bin.win32.x86_64/META-INF/MANIFEST.MF
index 9ea303d0..5c462b81 100644
--- a/org.rdkit.knime.bin.win32.x86_64/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.bin.win32.x86_64/META-INF/MANIFEST.MF
@@ -2,8 +2,8 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: RDKit binaries for 64bit Windows
 Bundle-SymbolicName: org.rdkit.knime.bin.win32.x86_64;singleton:=true
-Bundle-Version: 4.4.0.qualifier
-Fragment-Host: org.rdkit.knime.types;bundle-version="4.4.0"
+Bundle-Version: 4.4.1.qualifier
+Fragment-Host: org.rdkit.knime.types;bundle-version="4.4.1"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Eclipse-PlatformFilter: (&(osgi.os=win32)(osgi.arch=x86_64))
 Bundle-Vendor: NIBR
diff --git a/org.rdkit.knime.binaries.feature/feature.xml b/org.rdkit.knime.binaries.feature/feature.xml
index bb247dd7..f1a4cb88 100644
--- a/org.rdkit.knime.binaries.feature/feature.xml
+++ b/org.rdkit.knime.binaries.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.rdkit.knime.binaries.feature"
       label="RDKit Binaries and Chemistry Type Definitions Feature"
-      version="4.4.0.qualifier"
+      version="4.4.1.qualifier"
       provider-name="NIBR">
 
    <description>
diff --git a/org.rdkit.knime.feature/feature.xml b/org.rdkit.knime.feature/feature.xml
index 4e0d3d0d..05b57882 100644
--- a/org.rdkit.knime.feature/feature.xml
+++ b/org.rdkit.knime.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.rdkit.knime.feature"
       label="RDKit Nodes Feature"
-      version="4.4.0.qualifier"
+      version="4.4.1.qualifier"
       provider-name="NIBR"
       plugin="org.rdkit.knime.nodes">
 
diff --git a/org.rdkit.knime.nodes/META-INF/MANIFEST.MF b/org.rdkit.knime.nodes/META-INF/MANIFEST.MF
index 3e710c21..29a63a11 100644
--- a/org.rdkit.knime.nodes/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.nodes/META-INF/MANIFEST.MF
@@ -3,14 +3,14 @@ Bundle-ManifestVersion: 2
 Bundle-Name: RDKit Nodes
 Bundle-SymbolicName: org.rdkit.knime.nodes;singleton:=true
 Automatic-Module-Name: org.rdkit.knime.nodes
-Bundle-Version: 4.4.0.qualifier
+Bundle-Version: 4.4.1.qualifier
 Bundle-Vendor: NIBR
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.ui;bundle-version="[3.109.0,4.0.0)",
  org.knime.base;bundle-version="[4.2.0,5.0.0)",
  org.knime.chem.types;bundle-version="[4.2.0,5.0.0)",
  org.knime.workbench.repository;bundle-version="[4.2.0,5.0.0)",
- org.rdkit.knime.types;bundle-version="[4.4.0,5.0.0)",
+ org.rdkit.knime.types;bundle-version="[4.4.1,5.0.0)",
  org.knime.ext.svg;bundle-version="[4.2.0,5.0.0)"
 Export-Package: org.rdkit.knime.nodes,
  org.rdkit.knime.nodes.addconformers,
@@ -61,5 +61,5 @@ Export-Package: org.rdkit.knime.nodes,
 Bundle-Activator: org.rdkit.knime.nodes.RDKitNodePlugin
 Bundle-ActivationPolicy: lazy
 Bundle-ClassPath: .,
- lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar
+ lib/opsin-core-3.0-excludingInChI-jar-with-dependencies.jar
 Import-Package: org.w3c.dom.events;version="3.0.0"
diff --git a/org.rdkit.knime.nodes/build.properties b/org.rdkit.knime.nodes/build.properties
index b9e2ba91..42f443ba 100644
--- a/org.rdkit.knime.nodes/build.properties
+++ b/org.rdkit.knime.nodes/build.properties
@@ -4,7 +4,7 @@ output.. = bin/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
-               lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar,\
+               lib/opsin-core-3.0-excludingInChI-jar-with-dependencies.jar,\
                icons/
-jars.extra.classpath = lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar,\
+jars.extra.classpath = lib/opsin-core-3.0-excludingInChI-jar-with-dependencies.jar,\
 					   platform:/plugin/org.rdkit.knime.types/lib/org.RDKit.jar
diff --git a/org.rdkit.knime.nodes/lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar b/org.rdkit.knime.nodes/lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar
deleted file mode 100644
index 0b2f579a..00000000
Binary files a/org.rdkit.knime.nodes/lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar and /dev/null differ
diff --git a/org.rdkit.knime.nodes/lib/opsin-core-3.0-excludingInChI-jar-with-dependencies.jar b/org.rdkit.knime.nodes/lib/opsin-core-3.0-excludingInChI-jar-with-dependencies.jar
new file mode 100644
index 00000000..b3c260c8
Binary files /dev/null and b/org.rdkit.knime.nodes/lib/opsin-core-3.0-excludingInChI-jar-with-dependencies.jar differ
diff --git a/org.rdkit.knime.testing.feature/feature.xml b/org.rdkit.knime.testing.feature/feature.xml
index 7b22f505..58f60249 100644
--- a/org.rdkit.knime.testing.feature/feature.xml
+++ b/org.rdkit.knime.testing.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.rdkit.knime.testing.feature"
       label="RDKit Nodes Tests Feature"
-      version="4.4.0.qualifier"
+      version="4.4.1.qualifier"
       provider-name="NIBR">
 
    <description>
diff --git a/org.rdkit.knime.testing/META-INF/MANIFEST.MF b/org.rdkit.knime.testing/META-INF/MANIFEST.MF
index 369079a5..66a67ed6 100644
--- a/org.rdkit.knime.testing/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.testing/META-INF/MANIFEST.MF
@@ -3,10 +3,10 @@ Bundle-ManifestVersion: 2
 Bundle-Name: RDKit Nodes Tests
 Bundle-SymbolicName: org.rdkit.knime.testing;singleton:=true
 Automatic-Module-Name: org.rdkit.knime.testing
-Bundle-Version: 4.4.0.qualifier
+Bundle-Version: 4.4.1.qualifier
 Bundle-Vendor: NIBR
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Fragment-Host: org.rdkit.knime.nodes;bundle-version="4.4.0"
+Fragment-Host: org.rdkit.knime.nodes;bundle-version="4.4.1"
 Require-Bundle: org.knime.testing;bundle-version="[3.7.0,5.0.0)",
  org.knime.chem.base;bundle-version="[3.6.0,5.0.0)"
 Bundle-ClassPath: rdkit-testing.jar
diff --git a/org.rdkit.knime.types/META-INF/MANIFEST.MF b/org.rdkit.knime.types/META-INF/MANIFEST.MF
index 521443cd..cfed654a 100755
--- a/org.rdkit.knime.types/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.types/META-INF/MANIFEST.MF
@@ -21,7 +21,7 @@ Bundle-ActivationPolicy: lazy
 Bundle-ClassPath: rdkit-chem.jar,
  lib/org.RDKit.jar,
  lib/org.RDKitDoc.jar
-Bundle-Version: 4.4.0.qualifier
+Bundle-Version: 4.4.1.qualifier
 Bundle-Name: RDKit Chemistry Type Definitions
 Bundle-Activator: org.rdkit.knime.RDKitTypesPluginActivator
 Bundle-ManifestVersion: 2
diff --git a/org.rdkit.knime.wizards.feature/feature.xml b/org.rdkit.knime.wizards.feature/feature.xml
index dc484c13..c99b554e 100644
--- a/org.rdkit.knime.wizards.feature/feature.xml
+++ b/org.rdkit.knime.wizards.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.rdkit.knime.wizards.feature"
       label="RDKit Nodes Creation Wizards Feature"
-      version="4.4.0.qualifier"
+      version="4.4.1.qualifier"
       provider-name="NIBR"
       plugin="org.rdkit.knime.wizards">
 
diff --git a/org.rdkit.knime.wizards.samples/META-INF/MANIFEST.MF b/org.rdkit.knime.wizards.samples/META-INF/MANIFEST.MF
index 07512acf..30ddf53a 100644
--- a/org.rdkit.knime.wizards.samples/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.wizards.samples/META-INF/MANIFEST.MF
@@ -3,13 +3,13 @@ Bundle-ManifestVersion: 2
 Bundle-Name: RDKit Nodes Creation Wizards Samples
 Bundle-SymbolicName: org.rdkit.knime.wizards.samples;singleton:=true
 Automatic-Module-Name: org.rdkit.knime.wizards.samples
-Bundle-Version: 4.4.0.qualifier
+Bundle-Version: 4.4.1.qualifier
 Bundle-Activator: org.rdkit.knime.wizards.samples.Activator
 Bundle-Vendor: NIBR
 Require-Bundle: org.knime.base;bundle-version="[4.3.0,5.0.0)";resolution:=optional,
  org.knime.chem.types;bundle-version="[4.3.0,5.0.0)";resolution:=optional,
- org.rdkit.knime.nodes;bundle-version="[4.4.0,5.0.0)";resolution:=optional,
- org.rdkit.knime.types;bundle-version="[4.4.0,5.0.0)";resolution:=optional,
+ org.rdkit.knime.nodes;bundle-version="[4.4.1,5.0.0)";resolution:=optional,
+ org.rdkit.knime.types;bundle-version="[4.4.1,5.0.0)";resolution:=optional,
  org.eclipse.ui;bundle-version="[3.116.0,4.0.0)";resolution:=optional,
  org.eclipse.core.runtime;bundle-version="[3.17.0,4.0.0)";resolution:=optional
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
diff --git a/org.rdkit.knime.wizards/META-INF/MANIFEST.MF b/org.rdkit.knime.wizards/META-INF/MANIFEST.MF
index da6208f3..630a118c 100644
--- a/org.rdkit.knime.wizards/META-INF/MANIFEST.MF
+++ b/org.rdkit.knime.wizards/META-INF/MANIFEST.MF
@@ -3,7 +3,7 @@ Bundle-ManifestVersion: 2
 Bundle-Name: RDKit Nodes Creation Wizards
 Bundle-SymbolicName: org.rdkit.knime.wizards;singleton:=true
 Automatic-Module-Name: org.rdkit.knime.wizards
-Bundle-Version: 4.4.0.qualifier
+Bundle-Version: 4.4.1.qualifier
 Bundle-Activator: org.rdkit.knime.wizards.RDKitNodesWizardsPlugin
 Bundle-Vendor: NIBR
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.7.0,4.0.0)",