diff --git a/pom.xml b/pom.xml
index 0d1329b5b..b00bb7ed3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -100,7 +100,7 @@
     <android.platform.version>4.1.1.4</android.platform.version>
     <stax.api.version>1.0-2</stax.api.version>
 
-    <sl4j.version>1.7.36</sl4j.version>
+    <sl4j.version>2.0.9</sl4j.version>
 
     <tomcat.servlet.port>9080</tomcat.servlet.port>
     <tomcat.version>7.0.109</tomcat.version>
diff --git a/samples/osgi/server/pom.xml b/samples/osgi/server/pom.xml
index 78aeda9a9..d8f29ad0b 100644
--- a/samples/osgi/server/pom.xml
+++ b/samples/osgi/server/pom.xml
@@ -66,7 +66,7 @@ under the License.
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
-      <version>1.7.7</version>
+      <version>2.0.9</version>
     </dependency>
   </dependencies>
 
diff --git a/samples/tutorials/p0_all/pom.xml b/samples/tutorials/p0_all/pom.xml
index 49d39d738..b75499ef7 100644
--- a/samples/tutorials/p0_all/pom.xml
+++ b/samples/tutorials/p0_all/pom.xml
@@ -79,7 +79,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p10_media/pom.xml b/samples/tutorials/p10_media/pom.xml
index 9c7e1b917..c92d20e1c 100644
--- a/samples/tutorials/p10_media/pom.xml
+++ b/samples/tutorials/p10_media/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p11_batch/pom.xml b/samples/tutorials/p11_batch/pom.xml
index 277a3e7ce..0ea926db4 100644
--- a/samples/tutorials/p11_batch/pom.xml
+++ b/samples/tutorials/p11_batch/pom.xml
@@ -92,7 +92,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p12_deep_insert/pom.xml b/samples/tutorials/p12_deep_insert/pom.xml
index 7e5e1d0c3..9f59ed4b7 100644
--- a/samples/tutorials/p12_deep_insert/pom.xml
+++ b/samples/tutorials/p12_deep_insert/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p12_deep_insert_preparation/pom.xml b/samples/tutorials/p12_deep_insert_preparation/pom.xml
index 0dd8c02ec..95f8cb271 100644
--- a/samples/tutorials/p12_deep_insert_preparation/pom.xml
+++ b/samples/tutorials/p12_deep_insert_preparation/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p1_read/pom.xml b/samples/tutorials/p1_read/pom.xml
old mode 100755
new mode 100644
index a2287ec21..e793c67ca
--- a/samples/tutorials/p1_read/pom.xml
+++ b/samples/tutorials/p1_read/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p2_readep/pom.xml b/samples/tutorials/p2_readep/pom.xml
old mode 100755
new mode 100644
index 4624871c8..9e13204c9
--- a/samples/tutorials/p2_readep/pom.xml
+++ b/samples/tutorials/p2_readep/pom.xml
@@ -63,7 +63,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p3_write/pom.xml b/samples/tutorials/p3_write/pom.xml
old mode 100755
new mode 100644
index 28cd55fe1..1f41c0ca4
--- a/samples/tutorials/p3_write/pom.xml
+++ b/samples/tutorials/p3_write/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p4_navigation/pom.xml b/samples/tutorials/p4_navigation/pom.xml
old mode 100755
new mode 100644
index 15198f26c..111896dc7
--- a/samples/tutorials/p4_navigation/pom.xml
+++ b/samples/tutorials/p4_navigation/pom.xml
@@ -80,7 +80,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p5_queryoptions-tcs/pom.xml b/samples/tutorials/p5_queryoptions-tcs/pom.xml
old mode 100755
new mode 100644
index 1d3627ca9..6a0eb8929
--- a/samples/tutorials/p5_queryoptions-tcs/pom.xml
+++ b/samples/tutorials/p5_queryoptions-tcs/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p6_queryoptions-es/pom.xml b/samples/tutorials/p6_queryoptions-es/pom.xml
old mode 100755
new mode 100644
index cc5e08ce9..df8dab79e
--- a/samples/tutorials/p6_queryoptions-es/pom.xml
+++ b/samples/tutorials/p6_queryoptions-es/pom.xml
@@ -79,7 +79,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p7_queryoptions-o/pom.xml b/samples/tutorials/p7_queryoptions-o/pom.xml
index 7b81f9780..7624a89ee 100644
--- a/samples/tutorials/p7_queryoptions-o/pom.xml
+++ b/samples/tutorials/p7_queryoptions-o/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p8_queryoptions-f/pom.xml b/samples/tutorials/p8_queryoptions-f/pom.xml
index f30ec0905..1b1468673 100644
--- a/samples/tutorials/p8_queryoptions-f/pom.xml
+++ b/samples/tutorials/p8_queryoptions-f/pom.xml
@@ -79,7 +79,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p9_action/pom.xml b/samples/tutorials/p9_action/pom.xml
index 7da95b04e..211b03712 100644
--- a/samples/tutorials/p9_action/pom.xml
+++ b/samples/tutorials/p9_action/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/p9_action_preparation/pom.xml b/samples/tutorials/p9_action_preparation/pom.xml
index 70cf4acb6..382e857d0 100644
--- a/samples/tutorials/p9_action_preparation/pom.xml
+++ b/samples/tutorials/p9_action_preparation/pom.xml
@@ -78,7 +78,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/tutorials/pe_streaming/pom.xml b/samples/tutorials/pe_streaming/pom.xml
old mode 100755
new mode 100644
index 28d7af987..b5f1d2db2
--- a/samples/tutorials/pe_streaming/pom.xml
+++ b/samples/tutorials/pe_streaming/pom.xml
@@ -63,7 +63,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.11</version>
+			<version>2.0.9</version>
 			<scope>compile</scope>
 		</dependency>
 	</dependencies>