diff --git a/build.gradle b/build.gradle
index f9057362..b4bae979 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,8 +8,8 @@ defaultTasks "clean", "build"
 ext {
 	jackson2Version      = "2.9.8"
 	log4jVersion         = "2.12.0"
-	springVersion        = "5.2.0.RELEASE"
-	springBootVersion    = "2.2.0.RELEASE"
+	springVersion        = "5.1.9.RELEASE"
+	springBootVersion    = "2.1.9.RELEASE"
 	springSecurityVersion= "5.2.0.RELEASE"
 	hibernateVersion	 = "5.4.2.Final"
 	slf4jVersion	 	 = "1.7.26"
@@ -294,8 +294,8 @@ subprojects {
     	 //local jars
     	 compile fileTree(dir: "${rootDir}/maxkey-lib/", include: '*/*.jar')
     	 
-    	 compile group: 'org.apache.tomcat.embed', name: 'tomcat-embed-core', version: '8.5.43'
-    	 compile group: 'org.apache.tomcat.embed', name: 'tomcat-embed-jasper', version: '8.5.43'
+    	 compile group: 'org.apache.tomcat.embed', name: 'tomcat-embed-core', version: '8.5.47'
+    	 compile group: 'org.apache.tomcat.embed', name: 'tomcat-embed-jasper', version: '8.5.47'
     	 compile group: 'org.apache.tomcat.embed', name: 'tomcat-embed-logging-juli', version: '8.5.2'
     	 
     	 //compile group: 'org.eclipse.jdt.core.compiler', name: 'ecj', version: '4.6.1'
diff --git a/maxkey-protocols/maxkey-protocol-cas/bin/main/.gitignore b/maxkey-protocols/maxkey-protocol-cas/bin/main/.gitignore
deleted file mode 100644
index cf1db2ee..00000000
--- a/maxkey-protocols/maxkey-protocol-cas/bin/main/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/org/
diff --git a/maxkey-protocols/maxkey-protocol-cas/bin/test/.gitignore b/maxkey-protocols/maxkey-protocol-cas/bin/test/.gitignore
deleted file mode 100644
index c2d9872a..00000000
--- a/maxkey-protocols/maxkey-protocol-cas/bin/test/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/com/
diff --git a/maxkey-protocols/maxkey-protocol-tokenbased/bin/main/.gitignore b/maxkey-protocols/maxkey-protocol-tokenbased/bin/main/.gitignore
deleted file mode 100644
index cf1db2ee..00000000
--- a/maxkey-protocols/maxkey-protocol-tokenbased/bin/main/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/org/