diff --git a/klayout/EBeam/drc/SiEPIC_EBeam.drc b/klayout/EBeam/drc/SiEPIC_EBeam.drc
index 4bda2890..a9c3f6c2 100644
--- a/klayout/EBeam/drc/SiEPIC_EBeam.drc
+++ b/klayout/EBeam/drc/SiEPIC_EBeam.drc
@@ -17,7 +17,7 @@ report("SiEPIC-EBeam-PDK DRC", $output)
 LayerSi=input(1,0)
 #LayerSip6nm=input(31,0)
 #LayerSi_rib=input(2,0)
-LayerSiN = input(1,5)
+LayerSiN = input(4,0)
 DevRec=input(68,0)
 PinRec=input(1,10)
 LayerFP=input(99)
diff --git a/klayout/EBeam/drc/SiEPIC_EBeam_DRC.lydrc b/klayout/EBeam/drc/SiEPIC_EBeam_DRC.lydrc
index bf602af9..b2a8b72c 100644
--- a/klayout/EBeam/drc/SiEPIC_EBeam_DRC.lydrc
+++ b/klayout/EBeam/drc/SiEPIC_EBeam_DRC.lydrc
@@ -31,7 +31,7 @@ report("SiEPIC-EBeam-PDK DRC")
 LayerSi=input(1,0)
 #LayerSip6nm=input(31,0)
 #LayerSi_rib=input(2,0)
-LayerSiN = input(1,5)
+LayerSiN = input(4,0)
 DevRec=input(68,0)
 PinRec=input(1,10)
 LayerFP=input(99)
diff --git a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_ANT.py b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_ANT.py
index e63eb488..258f59fc 100644
--- a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_ANT.py
+++ b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_ANT.py
@@ -44,7 +44,7 @@ def __init__(self):
             print("Initializing '%s' Library." % library)
 
         # Set the description
-        self.description = "v0.4.21, ANT components"
+        self.description = "v0.4.22, ANT components"
 
         # Save the path, used for loading WAVEGUIDES.XML
         import os
diff --git a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Beta.py b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Beta.py
index c60455cf..b4733bd8 100644
--- a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Beta.py
+++ b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Beta.py
@@ -124,7 +124,7 @@ def PCell_get_parameters ( pcell ):
 
 """
 
-version = "0.4.21"
+version = "0.4.22"
 
 verbose = False
 
diff --git a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Dream.py b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Dream.py
index 51fab927..ac64dbc5 100644
--- a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Dream.py
+++ b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Dream.py
@@ -57,7 +57,7 @@ def __init__(self):
             print("Initializing '%s' Library." % library)
 
         # Set the description
-        self.description = "v0.4.21, Dream Photonics"
+        self.description = "v0.4.22, Dream Photonics"
 
         # Save the path, used for loading WAVEGUIDES.XML
         import os
diff --git a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_SiN.py b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_SiN.py
index 1b24e0e1..638ea92f 100644
--- a/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_SiN.py
+++ b/klayout/EBeam/pymacros/SiEPIC_EBeam_Library_SiN.py
@@ -67,7 +67,7 @@ def __init__(self):
         self.technology = tech_name
 
         # Set the description
-        self.description = "v0.4.21, Silicon Nitride"
+        self.description = "v0.4.22, Silicon Nitride"
 
         if verbose:
             print("Initializing '%s' Library, %s" % (library, self.description))
diff --git a/klayout/EBeam/pymacros/__init__.py b/klayout/EBeam/pymacros/__init__.py
index be382c6c..99d06149 100644
--- a/klayout/EBeam/pymacros/__init__.py
+++ b/klayout/EBeam/pymacros/__init__.py
@@ -1,4 +1,4 @@
-print('SiEPIC-EBeam-PDK v0.4.21 Python module: pymacros')
+print('SiEPIC-EBeam-PDK v0.4.22 Python module: pymacros')
 
 from . import (
     SiEPIC_EBeam_Library,
diff --git a/klayout/grain.xml b/klayout/grain.xml
index d3355fc3..0b73323d 100644
--- a/klayout/grain.xml
+++ b/klayout/grain.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <salt-grain>
  <name>siepic_ebeam_pdk</name>
- <version>0.4.21</version>
+ <version>0.4.22</version>
  <api-version>0.27</api-version>
  <title>SiEPIC EBeam PDK</title>
  <doc>A Process Design Kit for Silicon Photonics fabricated using Electron Beam Lithography (UW, ANT, SiEPICfab)</doc>
diff --git a/klayout/pyproject.toml b/klayout/pyproject.toml
index da922ba7..34cd16c7 100644
--- a/klayout/pyproject.toml
+++ b/klayout/pyproject.toml
@@ -6,7 +6,7 @@ packages = [
 
 [project]
 name = "siepic_ebeam_pdk"
-version = "0.4.21"
+version = "0.4.22"
 authors = [
   { name="Lukas Chrostowski", email="lukasc@ece.ubc.ca" },
 ]