diff --git a/datasource-provider/pom.xml b/datasource-provider/pom.xml
index 3b9ae275..110dd38e 100644
--- a/datasource-provider/pom.xml
+++ b/datasource-provider/pom.xml
@@ -57,7 +57,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.9.1</version>
+            <version>2.17.1</version>
         </dependency>
         <dependency>
             <groupId>org.elasticsearch.plugin</groupId>
diff --git a/pom.xml b/pom.xml
index 8619c9d3..7d4cbd45 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
         <jackson-core-asl.version>1.9.13</jackson-core-asl.version>
 
         <slf4j.version>1.7.25</slf4j.version>
-        <log4j-core.version>2.11.0</log4j-core.version>
+        <log4j-core.version>2.17.1</log4j-core.version>
         <log4j-api.version>2.11.0</log4j-api.version>
         <junit.version>4.12</junit.version>
 
diff --git a/textual-complexity/src/main/config/sentiment_valences_descriptions_en.properties b/textual-complexity/src/main/config/sentiment_valences_descriptions_en.properties
new file mode 100644
index 00000000..75e0bfd8
--- /dev/null
+++ b/textual-complexity/src/main/config/sentiment_valences_descriptions_en.properties
@@ -0,0 +1 @@
+Valence_ANEW=Affective Norms for English Words Valence
diff --git a/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordListsIndicesFactory.java b/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordListsIndicesFactory.java
index 3818906c..1a833d8d 100644
--- a/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordListsIndicesFactory.java
+++ b/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordListsIndicesFactory.java
@@ -27,7 +27,7 @@ public List<ComplexityIndex> build(Lang lang) {
         if (!WordValences.SUPPORTED_LANGUAGES.contains(lang)) {
             return result;
         }
-        WordValences.getValences(lang).stream()
+        WordValences.getValences(lang).keySet().stream()
                 .forEach(sv -> {
                     result.add(new AvgWordsInList(
                             ComplexityIndicesEnum.AVG_WORDS_IN_LIST_PER_DOC,
diff --git a/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordValences.java b/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordValences.java
index ce7b947e..75ffbf2c 100644
--- a/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordValences.java
+++ b/textual-complexity/src/main/java/com/readerbench/textualcomplexity/wordLists/WordValences.java
@@ -5,9 +5,11 @@
  */
 package com.readerbench.textualcomplexity.wordLists;
 
+import com.readerbench.coreservices.data.AbstractDocument;
 import com.readerbench.coreservices.data.Word;
 import com.readerbench.datasourceprovider.commons.ReadProperty;
 import com.readerbench.datasourceprovider.pojo.Lang;
+import com.readerbench.textualcomplexity.ComplexityIndex;
 
 import java.io.*;
 import java.util.ArrayList;
@@ -17,6 +19,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
+import java.util.ResourceBundle;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -27,7 +30,7 @@
 public class WordValences {
 
     private static final Map<Lang, Map<String, Map<String, Double>>> WORD_VALENCE_MAP = new EnumMap<>(Lang.class);
-    private static final Map<Lang, List<String>> VALENCES_FOR_LANG = new EnumMap<>(Lang.class);
+    private static final Map<Lang, Map<String, String>> VALENCES_FOR_LANG = new EnumMap<>(Lang.class);
     private static final Properties PROPERTIES = ReadProperty.getProperties("textual_complexity_paths.properties");
     private static final String PROPERTY_VALENCES_NAME = "VALENCES_%s_PATH";
     public static final List<Lang> SUPPORTED_LANGUAGES = Arrays.asList(Lang.en, Lang.fr, Lang.es);
@@ -44,9 +47,9 @@ private static void initLang(Lang lang) {
                 header = in.readLine();
             }
             String[] splitHeader = header.split(";");
-            ArrayList<String> valences = new ArrayList<>();
+            Map<String, String> valences = new HashMap<>();
             for (int i = 1; i < splitHeader.length; i++) {
-                valences.add(splitHeader[i]);
+                valences.put(splitHeader[i], ResourceBundle.getBundle("sentiment_valences_descriptions", lang.getLocale()).getString(splitHeader[i]));
             }
             VALENCES_FOR_LANG.put(lang, valences);
             String line;
@@ -74,7 +77,7 @@ public static Double getValenceForWord(Word word, String valence) {
                 .getOrDefault(valence, 0.);
     }
 
-    public static List<String> getValences(Lang lang) {
+    public static Map<String, String> getValences(Lang lang) {
         if (!VALENCES_FOR_LANG.containsKey(lang)) {
             initLang(lang);
         }