diff --git a/.gitignore b/.gitignore
index a0725e0..9cf7c65 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 ### Gradle ###
 .gradle
 build/
+gradle.properties
 
 # Ignore Gradle GUI config
 gradle-app.setting
diff --git a/README.md b/README.md
index 6456ae6..19c16f7 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,9 @@ public class Employee {
         return name;
     }
     ...
+    //this column will not be presented in the excel sheet.
+    @NoSheetColumn()
+    private String socialSecurityNumber;
 }
 ```
 
diff --git a/build.gradle b/build.gradle
index 835a33b..2b2d0f5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,45 +1,95 @@
+// apply plugin: 'java'
+// apply plugin: 'jacoco'
 
-apply plugin: 'java'
-apply plugin: 'jacoco'
-
+// apply plugin: 'signing'
+apply plugin: 'java-library'
 apply plugin: 'maven'
 apply plugin: 'signing'
 
+
 repositories {
-    mavenLocal()
+    jcenter()
     mavenCentral()
+    google()
 }
 
-group = 'io.github.millij'
-version = '2.0.0-SNAPSHOT'
-
 
 dependencies {
+    // https://mvnrepository.com/artifact/org.slf4j/slf4j-api
+    implementation 'org.slf4j:slf4j-api:1.7.26'
+
+    // https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils
+    implementation 'commons-beanutils:commons-beanutils:1.9.3'
+
+    // https://mvnrepository.com/artifact/org.apache.poi/poi
+    implementation 'org.apache.poi:poi:4.0.1'
 
-    // Main compile
-    // ----------------------------------------------------------------------------------
+    // https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml
+    implementation 'org.apache.poi:poi-ooxml:4.0.1'
 
-    // Slf4j
-    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.12'
+    // https://mvnrepository.com/artifact/org.apache.commons/commons-lang3
+    implementation 'org.apache.commons:commons-lang3:3.9'
 
-    // Apache Commons
-    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
-    compile group: 'commons-beanutils', name: 'commons-beanutils', version: '1.9.3'
+    // https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12
+    testImplementation 'org.slf4j:slf4j-log4j12:1.7.26'
+    // https://mvnrepository.com/artifact/junit/junit
+    testImplementation 'junit:junit:4.13'
 
-    // Apache POI
-    compile group: 'org.apache.poi', name: 'poi', version: '4.0.1'
-    compile group: 'org.apache.poi', name: 'poi-ooxml', version: '4.0.1'
 
 
-    // Test compile
-    // ----------------------------------------------------------------------------------
+}
+
+uploadArchives {
+    repositories {
+        mavenDeployer {
+            beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
+
+            repository(url: "https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/") {
+                authentication(userName: 'relbraun', password: '081982@Ariel')
+            }
+
+            snapshotRepository(url: "https://s01.oss.sonatype.org/content/repositories/snapshots/") {
+                authentication(userName: 'relbraun', password: '081982@Ariel')
+            }
 
-    testCompile group: 'org.slf4j', name: 'slf4j-log4j12', version: '1.7.12'
+            pom.project {
 
-    testCompile group: 'junit', name: 'junit', version: '4.12'
+                name 'Object Mapper for Apache POI'
+                description 'Objects mapper for Office formats - Excel files, Spreadsheets, etc. '
+                url 'https://github.com/relbraun/poi-object-mapper'
+                packaging 'jar'
+                // optionally artifactId can be defined here
 
+                scm {
+                    url 'https://github.com/relbraun/poi-object-mapper.git'
+                    connection 'scm:git:https://github.com/relbraun/poi-object-mapper.git'
+                    developerConnection 'scm:git:https://github.com/relbraun/poi-object-mapper.git'
+                }
+
+                licenses {
+                    license {
+                        name 'MIT License'
+                        url 'https://opensource.org/licenses/mit-license.php'
+                    }
+                }
+
+                developers {
+                    developer {
+                        id 'relbraun'
+                        name 'Ariel Braun'
+                        email 'relbraun@gmail.com'
+                    }
+                }
+            }
+        }
+    }
 }
 
+
+group = 'io.github.relbraun'
+version = '2.0.2'
+
+
 // Test
 // ----------------------------------------------------------------------------
 
@@ -51,110 +101,59 @@ test {
 // Java
 // ----------------------------------------------------------------------------
 
-tasks.withType(JavaCompile) {
-    sourceCompatibility = 1.7
-    targetCompatibility = 1.7
-}
+// tasks.withType(JavaCompile) {
+//     sourceCompatibility = 1.7
+//     targetCompatibility = 1.7
+// }
 
-task javadocJar(type: Jar) {
-    classifier = 'javadoc'
-    from javadoc
-}
+// task javadocJar(type: Jar) {
+//     classifier = 'javadoc'
+//     from javadoc
+// }
 
-task sourcesJar(type: Jar) {
-    classifier = 'sources'
-    from sourceSets.main.allSource
-}
+// task sourcesJar(type: Jar) {
+//     classifier = 'sources'
+//     from sourceSets.main.allSource
+// }
 
 artifacts {
     archives jar
-    archives javadocJar
-    archives sourcesJar
+    // archives javadocJar
+    // archives sourcesJar
 }
 
 
 // Signing
 
-signing {
-    sign configurations.archives
-}
-
+// signing {
+//     sign configurations.archives
+// }
 
 
 // JaCoCo
 // ----------------------------------------------------------------------------
 
-jacocoTestReport {
-    reports {
-        xml.enabled = true
-        html.enabled = true
-    }
-}
+// jacocoTestReport {
+//     reports {
+//         xml.enabled = true
+//         html.enabled = true
+//     }
+// }
 
-jacocoTestReport.dependsOn test
+// jacocoTestReport.dependsOn test
 
-check.dependsOn jacocoTestReport
+// check.dependsOn jacocoTestReport
 
 
 // CheckStyle
 // ----------------------------------------------------------------------------
 
 
-
 // Release
 // ----------------------------------------------------------------------------
 
-uploadArchives {
-
-    repositories {
-        mavenDeployer {
-
-            // Sign Artifacts before deploying
-            beforeDeployment {
-                MavenDeployment deployment -> signing.signPom(deployment) 
-            }
-
-            // Staging Repo
-            repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
-                authentication(userName: ossrhUsername, password: ossrhPassword)
-            }
-
-            // Snapshot Repo
-            snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
-                authentication(userName: ossrhUsername, password: ossrhPassword)
-            }
-
-
-            // Project Info to generate POM
-            pom.project {
-                name 'Object Mapper for Apache POI'
-                packaging 'jar'
-                description 'Objects mapper for Office formats - Excel files, Spreadsheets, etc. '
-                url 'https://millij.github.io/poi-object-mapper/'
-
-                scm {
-                    url 'https://github.com/millij/poi-object-mapper.git'
-                    connection 'scm:git:https://github.com/millij/poi-object-mapper.git'
-                    developerConnection 'scm:git:https://github.com/millij/poi-object-mapper.git'
-                }
 
-                licenses {
-                    license {
-                        name 'MIT License'
-                        url 'https://opensource.org/licenses/mit-license.php'
-                    }
-                }
+// apply plugin: 'com.bmuschko.nexus'
 
-                developers {
-                    developer {
-                        id 'millij'
-                        name 'Gowri Shankar'
-                        email 'gowrishankar.milli@gmail.com'
-                    }
-                }
-            }   // POM
-
-        }   // mavenDeployer
+archivesBaseName = 'poi-object-mapper'
 
-    }
-}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index d583fe7..e708b1c 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index c4a9e52..28ff446 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Sun Dec 10 18:59:49 IST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-bin.zip
diff --git a/gradlew b/gradlew
index 4453cce..4f906e0 100755
--- a/gradlew
+++ b/gradlew
@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,16 +44,16 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -66,6 +82,7 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -109,10 +126,11 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
@@ -138,35 +156,30 @@ if $cygwin ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=$((i+1))
+        i=`expr $i + 1`
     done
     case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=$(save "$@")
+APP_ARGS=`save "$@"`
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
 exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
index f955316..107acd3 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -13,15 +29,18 @@ if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
+if "%ERRORLEVEL%" == "0" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -35,7 +54,7 @@ goto fail
 set JAVA_HOME=%JAVA_HOME:"=%
 set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
-if exist "%JAVA_EXE%" goto init
+if exist "%JAVA_EXE%" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
@@ -45,28 +64,14 @@ echo location of your Java installation.
 
 goto fail
 
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
 :execute
 @rem Setup the command line
 
 set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
+
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
 
 :end
 @rem End local scope for the variables with windows NT shell
diff --git a/src/main/java/io/github/millij/poi/ss/model/annotations/NoSheetColumn.java b/src/main/java/io/github/millij/poi/ss/model/annotations/NoSheetColumn.java
new file mode 100644
index 0000000..b30e02c
--- /dev/null
+++ b/src/main/java/io/github/millij/poi/ss/model/annotations/NoSheetColumn.java
@@ -0,0 +1,28 @@
+package io.github.millij.poi.ss.model.annotations;
+
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+
+/**
+ * Marker annotation that can be used to define a "type" for a sheet. The value of this annotation
+ * will be used to map the sheet of the workbook to this bean definition.
+ * 
+ * <p>
+ * Default value ("") indicates that the default sheet name to be used without any modifications,
+ * but it can be specified to non-empty value to specify different name.
+ * </p>
+ * 
+ * <p>
+ * Typically used when writing the java objects to the file.
+ * </p>
+ */
+@Retention(RUNTIME)
+@Target(TYPE)
+public @interface NoSheetColumn {
+
+
+}
diff --git a/src/main/java/io/github/millij/poi/util/Spreadsheet.java b/src/main/java/io/github/millij/poi/util/Spreadsheet.java
index 5412bf5..9e54197 100644
--- a/src/main/java/io/github/millij/poi/util/Spreadsheet.java
+++ b/src/main/java/io/github/millij/poi/util/Spreadsheet.java
@@ -1,6 +1,7 @@
 package io.github.millij.poi.util;
 
 import io.github.millij.poi.ss.model.annotations.SheetColumn;
+import io.github.millij.poi.ss.model.annotations.NoSheetColumn;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
@@ -58,6 +59,8 @@ public static Map<String, String> getPropertyToColumnNameMap(Class<?> beanType)
         // Fields
         Field[] fields = beanType.getDeclaredFields();
         for (Field f : fields) {
+            if(!f.isAnnotationPresent(SheetColumn.class))
+                continue;
             String fieldName = f.getName();
             mapping.put(fieldName, fieldName);
 
@@ -70,6 +73,9 @@ public static Map<String, String> getPropertyToColumnNameMap(Class<?> beanType)
         // Methods
         Method[] methods = beanType.getDeclaredMethods();
         for (Method m : methods) {
+            if(!m.isAnnotationPresent(SheetColumn.class))
+                continue;
+                
             String fieldName = Beans.getFieldName(m);
             if (!mapping.containsKey(fieldName)) {
                 mapping.put(fieldName, fieldName);