diff --git a/ReplaceVersion.js b/ReplaceVersion.js
index 50f39ed..35f00fe 100644
--- a/ReplaceVersion.js
+++ b/ReplaceVersion.js
@@ -24,6 +24,18 @@ module.exports = {
           })
         })
       }
+
+      // val PUBG_API_WRAPPER by extra("0.8.1")
+      const regexKotlinValExtra = new RegExp(`${variableName}.+\(("|')${oldVersion}("|')\)`)
+      const regexKotlinValMatches = regexKotlinValExtra.exec(body)
+      if (regexKotlinValMatches && regexKotlinValMatches.length) {
+        regexKotlinValMatches.filter(it => it.includes(dependency.oldVersion)).forEach(match => {
+          replaceActions.push({
+            searchValue: match,
+            replaceValue: match.replace(dependency.oldVersion, dependency.version)
+          })
+        })
+      }
     }
 
     // compile 'de.kevcodez:pubg-api-wrapper:1.0.0'
diff --git a/__tests__/ReplaceVersion.test.js b/__tests__/ReplaceVersion.test.js
index a84f59a..531094d 100644
--- a/__tests__/ReplaceVersion.test.js
+++ b/__tests__/ReplaceVersion.test.js
@@ -81,6 +81,28 @@ test('Replace kotlin plugin version', () => {
     const replacedVersion = replaceText(`id("com.github.ben-manes.versions") version "0.22.0"`, pluginDependency)
     expect(replacedVersion).toBe(`id("com.github.ben-manes.versions") version "0.24.0"`)
 })
+test('Replace kotlin version with extra val without braces in reference', () => {
+    const replacedVersion = replaceText(`
+    val PUBG_API_WRAPPER by extra("0.8.1")
+    
+    dependencies {
+        implementation("de.kevcodez:pubg-api-wrapper:$PUBG_API_WRAPPER")
+    }
+    `, dependency)
+
+    expect(replacedVersion).toContain(`val PUBG_API_WRAPPER by extra("1.0.0")`)
+})
+test('Replace kotlin version with extra val with braces in reference', () => {
+    const replacedVersion = replaceText(`
+    val PUBG_API_WRAPPER by extra("0.8.1")
+    
+    dependencies {
+        implementation("de.kevcodez:pubg-api-wrapper:$\{PUBG_API_WRAPPER\}")
+    }
+    `, dependency)
+
+    expect(replacedVersion).toContain(`val PUBG_API_WRAPPER by extra("1.0.0")`)
+})
 
 function replaceText(source, dependency) {
     const replaceVersionActions = ReplaceVersion.replace(source, dependency)