diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 344953b..629dc89 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,7 +34,7 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Validate wrapper
       - name: Gradle Wrapper Validation
@@ -42,7 +42,7 @@ jobs:
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
@@ -102,11 +102,11 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
@@ -155,18 +155,18 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
 
       # Run Qodana inspections
       - name: Qodana - Code Inspection
-        uses: JetBrains/qodana-action@v2023.2.1
+        uses: JetBrains/qodana-action@v2023.2.8
         with:
           cache-default-branch-only: true
 
@@ -186,11 +186,11 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
@@ -233,11 +233,11 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8036d44..d58c8a6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,13 +20,13 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.event.release.tag_name }}
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
diff --git a/.github/workflows/run-ui-tests.yml b/.github/workflows/run-ui-tests.yml
index d66bcff..573cc5d 100644
--- a/.github/workflows/run-ui-tests.yml
+++ b/.github/workflows/run-ui-tests.yml
@@ -33,11 +33,11 @@ jobs:
 
       # Check out current repository
       - name: Fetch Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 17
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6b5ecf..db336c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 ## [Unreleased]
 
+### Added
+- Support for all 2023.3 builds (233.*)
+
+### Changed
+- Replace deprecated apache commons utils
+- Update dependencies
+
 ## [4.4.2] - 2023-09-02
 
 ### Added
diff --git a/build.gradle.kts b/build.gradle.kts
index 3043bb5..50deb26 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -29,7 +29,11 @@ dependencies {
 
 // Set the JVM language level used to build the project. Use Java 11 for 2020.3+, and Java 17 for 2022.2+.
 kotlin {
-    jvmToolchain(17)
+    @Suppress("UnstableApiUsage")
+    jvmToolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+        vendor = JvmVendorSpec.JETBRAINS
+    }
 }
 
 // Configure Gradle IntelliJ Plugin - read more: https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
diff --git a/gradle.properties b/gradle.properties
index 1cf830e..79a1d0b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,22 +4,22 @@ pluginGroup = de.marhali.easyi18n
 pluginName = easy-i18n
 pluginRepositoryUrl = https://github.com/marhali/easy-i18n
 # SemVer format -> https://semver.org
-pluginVersion = 4.4.2
+pluginVersion = 4.4.3
 
 # Supported build number ranges and IntelliJ Platform versions -> https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 pluginSinceBuild = 223
-pluginUntilBuild = 232.*
+pluginUntilBuild = 233.*
 
 # IntelliJ Platform Properties -> https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html#configuration-intellij-extension
 platformType = IU
-platformVersion = 2023.2.1
+platformVersion = 2023.3
 
 # Plugin Dependencies -> https://plugins.jetbrains.com/docs/intellij/plugin-dependencies.html
 # Example: platformPlugins = com.intellij.java, com.jetbrains.php:203.4449.22
-platformPlugins = org.jetbrains.kotlin, JavaScript, com.jetbrains.php:232.9559.64
+platformPlugins = org.jetbrains.kotlin, JavaScript, com.jetbrains.php:233.11799.241
 
 # Gradle Releases -> https://github.com/gradle/gradle/releases
-gradleVersion = 8.3
+gradleVersion = 8.5
 
 # Opt-out flag for bundling Kotlin standard library -> https://jb.gg/intellij-platform-kotlin-stdlib
 kotlin.stdlib.default.dependency = false
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 15cb032..284b79a 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,14 +1,14 @@
 [versions]
 # libraries
-annotations = "24.0.1"
+annotations = "24.1.0"
 json5-java = "2.0.0"
 
 # plugins
-kotlin = "1.9.0"
-changelog = "2.1.2"
-gradleIntelliJPlugin = "1.15.0"
+kotlin = "1.9.21"
+changelog = "2.2.0"
+gradleIntelliJPlugin = "1.16.1"
 qodana = "0.1.13"
-kover = "0.7.3"
+kover = "0.7.5"
 
 [libraries]
 annotations = { group = "org.jetbrains", name = "annotations", version.ref = "annotations" }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 7f93135..d64cd49 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 532677e..7cf0814 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index 547ba0c..31042a6 100755
--- a/gradlew
+++ b/gradlew
@@ -145,7 +145,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
@@ -153,7 +153,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -202,11 +202,11 @@ fi
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
diff --git a/qodana.yml b/qodana.yml
index de9b051..0be9353 100644
--- a/qodana.yml
+++ b/qodana.yml
@@ -3,7 +3,7 @@
 
 version: 1.0
 linter: jetbrains/qodana-jvm-community:latest
-projectJDK: 17
+projectJDK: "17"
 profile:
   name: qodana.recommended
 exclude:
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 8e67e0a..7cf7841 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -1,5 +1,5 @@
 plugins {
-    id("org.gradle.toolchains.foojay-resolver-convention") version "0.6.0"
+    id("org.gradle.toolchains.foojay-resolver-convention") version "0.7.0"
 }
 
 rootProject.name = "easy-i18n"
diff --git a/src/main/java/de/marhali/easyi18n/io/parser/ArrayMapper.java b/src/main/java/de/marhali/easyi18n/io/parser/ArrayMapper.java
index ec164cd..a1d6ce6 100644
--- a/src/main/java/de/marhali/easyi18n/io/parser/ArrayMapper.java
+++ b/src/main/java/de/marhali/easyi18n/io/parser/ArrayMapper.java
@@ -1,8 +1,7 @@
 package de.marhali.easyi18n.io.parser;
 
 import de.marhali.easyi18n.util.StringUtil;
-
-import org.apache.commons.lang.StringEscapeUtils;
+import org.apache.commons.text.StringEscapeUtils;
 
 import java.text.MessageFormat;
 import java.util.Iterator;
diff --git a/src/main/java/de/marhali/easyi18n/io/parser/json/JsonMapper.java b/src/main/java/de/marhali/easyi18n/io/parser/json/JsonMapper.java
index 328eae7..6ef013f 100644
--- a/src/main/java/de/marhali/easyi18n/io/parser/json/JsonMapper.java
+++ b/src/main/java/de/marhali/easyi18n/io/parser/json/JsonMapper.java
@@ -7,9 +7,8 @@ import com.google.gson.JsonPrimitive;
 import de.marhali.easyi18n.model.TranslationNode;
 import de.marhali.easyi18n.model.TranslationValue;
 import de.marhali.easyi18n.util.StringUtil;
-
-import org.apache.commons.lang.StringEscapeUtils;
-import org.apache.commons.lang.math.NumberUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.apache.commons.text.StringEscapeUtils;
 
 import java.util.Map;
 
@@ -61,7 +60,7 @@ public class JsonMapper {
                 if(content != null) {
                     if(JsonArrayMapper.isArray(content)) {
                         json.add(key, JsonArrayMapper.write(content));
-                    } else if(NumberUtils.isNumber(content)) {
+                    } else if(NumberUtils.isCreatable(content)) {
                         json.add(key, new JsonPrimitive(NumberUtils.createNumber(content)));
                     } else {
                         json.add(key, new JsonPrimitive(StringEscapeUtils.unescapeJava(content)));
diff --git a/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5ArrayMapper.java b/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5ArrayMapper.java
index c5f545b..208f070 100644
--- a/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5ArrayMapper.java
+++ b/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5ArrayMapper.java
@@ -5,8 +5,7 @@ import de.marhali.easyi18n.util.StringUtil;
 import de.marhali.json5.Json5;
 import de.marhali.json5.Json5Array;
 import de.marhali.json5.Json5Primitive;
-
-import org.apache.commons.lang.math.NumberUtils;
+import org.apache.commons.lang3.math.NumberUtils;
 
 import java.io.IOException;
 
@@ -40,7 +39,7 @@ public class Json5ArrayMapper extends ArrayMapper {
             } else {
                 if(StringUtil.isHexString(element)) {
                     array.add(Json5Primitive.of(element, true));
-                } else if(NumberUtils.isNumber(element)) {
+                } else if(NumberUtils.isCreatable(element)) {
                     array.add(Json5Primitive.of(NumberUtils.createNumber(element)));
                 } else {
                     array.add(Json5Primitive.of(element));
diff --git a/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5Mapper.java b/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5Mapper.java
index dc6bdfe..7e9accc 100644
--- a/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5Mapper.java
+++ b/src/main/java/de/marhali/easyi18n/io/parser/json5/Json5Mapper.java
@@ -6,9 +6,8 @@ import de.marhali.easyi18n.util.StringUtil;
 import de.marhali.json5.Json5Element;
 import de.marhali.json5.Json5Object;
 import de.marhali.json5.Json5Primitive;
-
-import org.apache.commons.lang.StringEscapeUtils;
-import org.apache.commons.lang.math.NumberUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.apache.commons.text.StringEscapeUtils;
 
 import java.util.Map;
 
@@ -61,7 +60,7 @@ public class Json5Mapper {
                         json.add(key, Json5ArrayMapper.write(content));
                     } else if(StringUtil.isHexString(content)) {
                         json.add(key, Json5Primitive.of(content, true));
-                    } else if(NumberUtils.isNumber(content)) {
+                    } else if(NumberUtils.isCreatable(content)) {
                         json.add(key, Json5Primitive.of(NumberUtils.createNumber(content)));
                     } else {
                         json.add(key, Json5Primitive.of(StringEscapeUtils.unescapeJava(content)));
diff --git a/src/main/java/de/marhali/easyi18n/io/parser/properties/PropertiesMapper.java b/src/main/java/de/marhali/easyi18n/io/parser/properties/PropertiesMapper.java
index 2cac6ae..1b5a326 100644
--- a/src/main/java/de/marhali/easyi18n/io/parser/properties/PropertiesMapper.java
+++ b/src/main/java/de/marhali/easyi18n/io/parser/properties/PropertiesMapper.java
@@ -5,9 +5,8 @@ import de.marhali.easyi18n.model.KeyPath;
 import de.marhali.easyi18n.model.TranslationValue;
 import de.marhali.easyi18n.util.KeyPathConverter;
 import de.marhali.easyi18n.util.StringUtil;
-
-import org.apache.commons.lang.StringEscapeUtils;
-import org.apache.commons.lang.math.NumberUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.apache.commons.text.StringEscapeUtils;
 
 import java.util.Map;
 
@@ -51,7 +50,7 @@ public class PropertiesMapper {
 
                 if(PropertiesArrayMapper.isArray(content)) {
                     properties.put(simpleKey, PropertiesArrayMapper.write(content));
-                } else if(NumberUtils.isNumber(content)) {
+                } else if(NumberUtils.isCreatable(content)) {
                     properties.put(simpleKey, NumberUtils.createNumber(content));
                 } else {
                     properties.put(simpleKey, StringEscapeUtils.unescapeJava(content));
diff --git a/src/main/java/de/marhali/easyi18n/io/parser/yaml/YamlMapper.java b/src/main/java/de/marhali/easyi18n/io/parser/yaml/YamlMapper.java
index 78709b6..37a09bd 100644
--- a/src/main/java/de/marhali/easyi18n/io/parser/yaml/YamlMapper.java
+++ b/src/main/java/de/marhali/easyi18n/io/parser/yaml/YamlMapper.java
@@ -3,9 +3,8 @@ package de.marhali.easyi18n.io.parser.yaml;
 import de.marhali.easyi18n.model.TranslationNode;
 import de.marhali.easyi18n.model.TranslationValue;
 import de.marhali.easyi18n.util.StringUtil;
-
-import org.apache.commons.lang.StringEscapeUtils;
-import org.apache.commons.lang.math.NumberUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.apache.commons.text.StringEscapeUtils;
 
 import java.util.HashMap;
 import java.util.List;
@@ -53,7 +52,7 @@ public class YamlMapper {
                 if(content != null) {
                     if(YamlArrayMapper.isArray(content)) {
                         section.put(key, YamlArrayMapper.write(content));
-                    } else if(NumberUtils.isNumber(content)) {
+                    } else if(NumberUtils.isCreatable(content)) {
                         section.put(key, NumberUtils.createNumber(content));
                     } else {
                         section.put(key, StringEscapeUtils.unescapeJava(content));
diff --git a/src/main/java/de/marhali/easyi18n/util/StringUtil.java b/src/main/java/de/marhali/easyi18n/util/StringUtil.java
index 6597dda..4755289 100644
--- a/src/main/java/de/marhali/easyi18n/util/StringUtil.java
+++ b/src/main/java/de/marhali/easyi18n/util/StringUtil.java
@@ -24,7 +24,7 @@ public class StringUtil {
 
     /**
      * Escapes control characters for the given input string.
-     * Inspired by Apache Commons (see {@link org.apache.commons.lang.StringEscapeUtils}
+     * Inspired by Apache Commons (see {@link org.apache.commons.text.StringEscapeUtils}
      * @param input The input string
      * @param skipStrings Should every string literal indication ("", '') be skipped? (Needed e.g. for json)
      * @return Escaped string