diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f4947e3..8cf77912 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
-------------------------------------------------------------------------------------------------------------
-## OPC UA Solution .NET Core - 3.1.1
+## OPC UA Solution .NET - 3.1.3
+
+# Changes
+- Removed unused System.Security.Cryptography.Pkcs
+
+-------------------------------------------------------------------------------------------------------------
+## OPC UA Solution .NET - 3.1.1
# Changes
- Includes all changes and fixes from the [OPC UA 1.04 Maintenance Update 1.4.371.91](https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.371.91).
diff --git a/appveyor.yml b/appveyor.yml
index d40ffcd4..a85dc04a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,7 +4,7 @@
#---------------------------------#
# version format
-version: 3.1.1.{build}-{branch}
+version: 3.1.3.{build}-{branch}
# branches to build
diff --git a/examples/Base/SampleClient/SampleCompany.SampleClient.csproj b/examples/Base/SampleClient/SampleCompany.SampleClient.csproj
index caa090da..2cb8a65d 100644
--- a/examples/Base/SampleClient/SampleCompany.SampleClient.csproj
+++ b/examples/Base/SampleClient/SampleCompany.SampleClient.csproj
@@ -21,8 +21,8 @@
-
-
+
+
diff --git a/examples/Base/SampleServer/SampleCompany.SampleServer.csproj b/examples/Base/SampleServer/SampleCompany.SampleServer.csproj
index a435dbb3..28e6c018 100644
--- a/examples/Base/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/Base/SampleServer/SampleCompany.SampleServer.csproj
@@ -21,12 +21,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/BaseModel/SampleServer/SampleCompany.SampleServer.csproj b/examples/BaseModel/SampleServer/SampleCompany.SampleServer.csproj
index b0037955..5d07e291 100644
--- a/examples/BaseModel/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/BaseModel/SampleServer/SampleCompany.SampleServer.csproj
@@ -32,12 +32,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/DataTypes/SampleServer/SampleCompany.SampleServer.csproj b/examples/DataTypes/SampleServer/SampleCompany.SampleServer.csproj
index b0037955..5d07e291 100644
--- a/examples/DataTypes/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/DataTypes/SampleServer/SampleCompany.SampleServer.csproj
@@ -32,12 +32,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/Empty/EmptyClient/EmptyCompany.EmptyClient.csproj b/examples/Empty/EmptyClient/EmptyCompany.EmptyClient.csproj
index da148ae1..22954ec2 100644
--- a/examples/Empty/EmptyClient/EmptyCompany.EmptyClient.csproj
+++ b/examples/Empty/EmptyClient/EmptyCompany.EmptyClient.csproj
@@ -21,8 +21,8 @@
-
-
+
+
diff --git a/examples/Empty/EmptyServer/EmptyCompany.EmptyServer.csproj b/examples/Empty/EmptyServer/EmptyCompany.EmptyServer.csproj
index 0f972f8b..d8433350 100644
--- a/examples/Empty/EmptyServer/EmptyCompany.EmptyServer.csproj
+++ b/examples/Empty/EmptyServer/EmptyCompany.EmptyServer.csproj
@@ -21,12 +21,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/HistoricalAccess/SampleServer/SampleCompany.SampleServer.csproj b/examples/HistoricalAccess/SampleServer/SampleCompany.SampleServer.csproj
index 692b51f0..8b263891 100644
--- a/examples/HistoricalAccess/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/HistoricalAccess/SampleServer/SampleCompany.SampleServer.csproj
@@ -21,12 +21,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/ReverseConnect/SampleServer/SampleCompany.SampleServer.csproj b/examples/ReverseConnect/SampleServer/SampleCompany.SampleServer.csproj
index a435dbb3..28e6c018 100644
--- a/examples/ReverseConnect/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/ReverseConnect/SampleServer/SampleCompany.SampleServer.csproj
@@ -21,12 +21,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/SampleCompany/SamplePublisher/SampleCompany.SamplePublisher.csproj b/examples/SampleCompany/SamplePublisher/SampleCompany.SamplePublisher.csproj
index e05f3202..115873ac 100644
--- a/examples/SampleCompany/SamplePublisher/SampleCompany.SamplePublisher.csproj
+++ b/examples/SampleCompany/SamplePublisher/SampleCompany.SamplePublisher.csproj
@@ -18,7 +18,7 @@
-
+
diff --git a/examples/SampleCompany/SampleSubscriber/SampleCompany.SampleSubscriber.csproj b/examples/SampleCompany/SampleSubscriber/SampleCompany.SampleSubscriber.csproj
index 217385b5..ead2c68d 100644
--- a/examples/SampleCompany/SampleSubscriber/SampleCompany.SampleSubscriber.csproj
+++ b/examples/SampleCompany/SampleSubscriber/SampleCompany.SampleSubscriber.csproj
@@ -18,7 +18,7 @@
-
+
diff --git a/examples/SamplePublisher/SampleCompany.SamplePublisher.csproj b/examples/SamplePublisher/SampleCompany.SamplePublisher.csproj
index 43fc1419..d222b852 100644
--- a/examples/SamplePublisher/SampleCompany.SamplePublisher.csproj
+++ b/examples/SamplePublisher/SampleCompany.SamplePublisher.csproj
@@ -18,7 +18,7 @@
-
+
diff --git a/examples/SampleSubscriber/SampleCompany.SampleSubscriber.csproj b/examples/SampleSubscriber/SampleCompany.SampleSubscriber.csproj
index 6141afda..6492d955 100644
--- a/examples/SampleSubscriber/SampleCompany.SampleSubscriber.csproj
+++ b/examples/SampleSubscriber/SampleCompany.SampleSubscriber.csproj
@@ -18,7 +18,7 @@
-
+
diff --git a/examples/SimpleEvents/SampleServer/SampleCompany.SampleServer.csproj b/examples/SimpleEvents/SampleServer/SampleCompany.SampleServer.csproj
index b0037955..5d07e291 100644
--- a/examples/SimpleEvents/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/SimpleEvents/SampleServer/SampleCompany.SampleServer.csproj
@@ -32,12 +32,12 @@
-
+
-
-
-
+
+
+
diff --git a/examples/Simulation/SampleClient/SampleCompany.SampleClient.csproj b/examples/Simulation/SampleClient/SampleCompany.SampleClient.csproj
index 3d1ac7d4..5b5e3ba6 100644
--- a/examples/Simulation/SampleClient/SampleCompany.SampleClient.csproj
+++ b/examples/Simulation/SampleClient/SampleCompany.SampleClient.csproj
@@ -21,11 +21,11 @@
-
+
-
-
+
+
diff --git a/examples/Simulation/SampleServer/SampleCompany.SampleServer.csproj b/examples/Simulation/SampleServer/SampleCompany.SampleServer.csproj
index 33f8a7c8..b7239576 100644
--- a/examples/Simulation/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/Simulation/SampleServer/SampleCompany.SampleServer.csproj
@@ -32,13 +32,13 @@
-
+
-
-
-
-
+
+
+
+
diff --git a/examples/UserAuthentication/SampleServer/SampleCompany.SampleServer.csproj b/examples/UserAuthentication/SampleServer/SampleCompany.SampleServer.csproj
index a435dbb3..28e6c018 100644
--- a/examples/UserAuthentication/SampleServer/SampleCompany.SampleServer.csproj
+++ b/examples/UserAuthentication/SampleServer/SampleCompany.SampleServer.csproj
@@ -21,12 +21,12 @@
-
+
-
-
-
+
+
+
diff --git a/targets.props b/targets.props
index 93b070cc..a2d50fe5 100644
--- a/targets.props
+++ b/targets.props
@@ -14,7 +14,7 @@
net48;net6.0;net7.0
net6.0
net48;net6.0;net7.0
- net48;netstandard2.1;net6.0;net7.0
+ net48;net6.0;net7.0
net48;net6.0;net7.0
@@ -24,7 +24,7 @@
net48
net48
net48
- net48;netstandard2.1
+ net48
net48