diff --git a/CHANGELOG.md b/CHANGELOG.md
index f98f1fe76..ebe6a1f11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## XX.XX.XX
+* Added gradle configuration cache support to upload symbols plugin.
+
 ## 26.1.2
 * Added `CountlyInitProvider` ContentProvider to register activity lifecycle callbacks before `Application.onCreate()`. This ensures the SDK captures the current activity in single-activity frameworks (Flutter, React Native) and apps with deferred initialization.
 * Added `CountlyConfig.setInitialActivity(Activity)` as an explicit way for wrapper SDKs to provide the host activity during initialization.
diff --git a/upload-plugin/src/main/groovy/ly/count/android/plugins/uploadSymbols.groovy b/upload-plugin/src/main/groovy/ly/count/android/plugins/uploadSymbols.groovy
index 3e0cdb1b6..1c61b510e 100644
--- a/upload-plugin/src/main/groovy/ly/count/android/plugins/uploadSymbols.groovy
+++ b/upload-plugin/src/main/groovy/ly/count/android/plugins/uploadSymbols.groovy
@@ -4,7 +4,6 @@ import okhttp3.*
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.tasks.StopActionException
-import org.gradle.api.tasks.StopExecutionException
 
 import static groovy.io.FileType.FILES
 
@@ -20,29 +19,33 @@ class UploadSymbolsPluginExtension {
 
 class UploadSymbolsPlugin implements Plugin<Project> {
   void apply(Project project) {
-    OkHttpClient client = null
-    Request request = null
     def ext = project.extensions.create('countly', UploadSymbolsPluginExtension)
     project.tasks.register('uploadJavaSymbols') {
       group = "countly"
       description = "Upload Java minification mapping file mapping.txt to Countly server"
-      doFirst {
-        if (!ext.app_key) {
-          logger.error("Please specify your app key in countly block.")
-          throw new StopExecutionException("Please specify your app key in countly block.")
-        }
-        if (!ext.server) {
-          logger.error("Please specify your server in countly block.")
-          throw new StopExecutionException("Please specify your server in countly block.")
-        }
-        String buildVersion = project.android.defaultConfig.versionName
-        String url = ext.server;
-        String path = "i/crash_symbols/upload_symbol";
+
+      // Resolve project/extension values at configuration time to avoid
+      // capturing non-serializable Project reference in task actions
+      def buildVersion = project.android.defaultConfig.versionName
+      def appKey = ext.app_key
+      def serverUrl = ext.server
+      def noteJava = ext.noteJava
+      def mappingFilePath = "${project.buildDir}/${ext.mappingFile}"
+
+      if (!appKey || !serverUrl) {
+        logger.warn("[Countly] uploadJavaSymbols: 'app_key' or 'server' is empty. " +
+            "Make sure the countly block is configured before this task is realized. " +
+            "Disabling task.")
+        enabled = false
+      }
+
+      doLast {
+        String url = serverUrl
+        String path = "i/crash_symbols/upload_symbol"
         // Ensure there is exactly one "/" between the base URL and the path
-        url = url.endsWith("/") ? url + path : url + "/" + path;
-        def filePath = "$project.buildDir/$ext.mappingFile"
-        logger.debug("uploadJavaSymbols, Version name:[ {} ], Upload symbol url:[ {} ], Mapping file path:[ {} ]", buildVersion, url, filePath)
-        File file = new File(filePath)
+        url = url.endsWith("/") ? url + path : url + "/" + path
+        logger.debug("uploadJavaSymbols, Version name:[ {} ], Upload symbol url:[ {} ], Mapping file path:[ {} ]", buildVersion, url, mappingFilePath)
+        File file = new File(mappingFilePath)
         if (!file.exists()) {
           logger.error("Mapping file not found")
           throw new StopActionException("Mapping file not found")
@@ -52,17 +55,11 @@ class UploadSymbolsPlugin implements Plugin<Project> {
             .addFormDataPart("symbols", file.getName(),
                 RequestBody.create(MediaType.parse("text/plain"), file))
             .addFormDataPart("platform", "android")
-            .addFormDataPart("app_key", ext.app_key)
+            .addFormDataPart("app_key", appKey)
             .addFormDataPart("build", buildVersion)
-            .addFormDataPart("note", ext.noteJava)
+            .addFormDataPart("note", noteJava)
             .build()
-        request = new Request.Builder().url(url).post(formBody).build()
-      }
-      doLast {
-        if (request == null) {
-          logger.error("Request not constructed")
-          throw new StopActionException("Something happened while constructing the request. Please try again.")
-        }
+        Request request = new Request.Builder().url(url).post(formBody).build()
 
         if (request.body() != null) {
           logger.debug("uploadJavaSymbols, Generated request: {}", request.body().toString())
@@ -70,7 +67,7 @@ class UploadSymbolsPlugin implements Plugin<Project> {
           logger.error("uploadJavaSymbols, Request body is null which should not be the case")
         }
 
-        client = new OkHttpClient()
+        OkHttpClient client = new OkHttpClient()
         Response response = client.newCall(request).execute()
 
         if (response.code() != 200) {
@@ -88,28 +85,43 @@ class UploadSymbolsPlugin implements Plugin<Project> {
     project.tasks.register('uploadNativeSymbols') {
       group = "countly"
       description = "Upload breakpad symbols folder to Countly server"
-      doFirst {
-        String buildVersion = project.android.defaultConfig.versionName
-        String url = "${ext.server}/i/crash_symbols/upload_symbol"
-        String breakpadVersion = "$ext.dumpSymsPath/dump_syms --version".execute().getText().trim()
+
+      // Resolve project/extension values at configuration time to avoid
+      // capturing non-serializable Project reference in task actions
+      def buildVersion = project.android.defaultConfig.versionName
+      def appKey = ext.app_key
+      def serverUrl = ext.server
+      def noteNative = ext.noteNative
+      def dumpSymsPath = ext.dumpSymsPath
+      def objectsDirPath = "${project.buildDir}/${ext.nativeObjectFilesDir}"
+      def countlyDirStr = "${project.buildDir}/intermediates/countly"
+
+      if (!appKey || !serverUrl) {
+        logger.warn("[Countly] uploadNativeSymbols: 'app_key' or 'server' is empty. " +
+            "Make sure the countly block is configured before this task is realized. " +
+            "Disabling task.")
+        enabled = false
+      }
+
+      doLast {
+        String url = "${serverUrl}/i/crash_symbols/upload_symbol"
+        String breakpadVersion = "$dumpSymsPath/dump_syms --version".execute().getText().trim()
 
         if (!(breakpadVersion =~ /^\d+\.\d+\+cly$/)) {
           breakpadVersion = "0.1+bpd"
         }
 
-        def objectsDir = new File("$project.buildDir/$ext.nativeObjectFilesDir")
-        def countlyDirStr = "$project.buildDir/intermediates/countly"
-        def countlyDir = new File("$countlyDirStr")
+        def objectsDir = new File(objectsDirPath)
+        def countlyDir = new File(countlyDirStr)
         logger.debug("uploadNativeSymbols, Version name:[ {} ], Upload symbol url:[ {} ], objectsDir:[ {} ], countlyDirStr:[ {} ], countlyDir:[ {} ], breakpadVersion:[ {} ]", buildVersion, url, objectsDir, countlyDirStr, countlyDir, breakpadVersion)
 
         countlyDir.deleteDir()
         countlyDir.mkdirs()
-        // println "objectsDir=$objectsDir"
         def filterObjectFiles = ~/.*\.so$/
         def i = 0
         def processFile = {
           i = i + 1
-          def cmd = "$ext.dumpSymsPath/dump_syms $it"
+          def cmd = "$dumpSymsPath/dump_syms $it"
           println cmd
           def proc = cmd.execute()
           def outputStream = new StringBuffer()
@@ -131,23 +143,23 @@ class UploadSymbolsPlugin implements Plugin<Project> {
         }
         objectsDir.traverse type: FILES, visit: processFile, nameFilter: filterObjectFiles
         def tarFileName = "$countlyDirStr/symbols.tar.gz"
-        project.ant.tar(destfile: tarFileName, basedir: "$countlyDirStr", includes: "symbols/**", compression: "gzip")
+        // Use standalone AntBuilder instead of project.ant for configuration cache compatibility
+        new groovy.ant.AntBuilder().tar(destfile: tarFileName, basedir: "$countlyDirStr", includes: "symbols/**", compression: "gzip")
         File file = new File(tarFileName)
         RequestBody formBody = new MultipartBody.Builder()
             .setType(MultipartBody.FORM)
             .addFormDataPart("symbols", file.getName(),
                 RequestBody.create(MediaType.parse("text/plain"), file))
             .addFormDataPart("platform", "android_native")
-            .addFormDataPart("app_key", ext.app_key)
+            .addFormDataPart("app_key", appKey)
             .addFormDataPart("build", buildVersion)
-            .addFormDataPart("note", ext.noteNative)
+            .addFormDataPart("note", noteNative)
             .addFormDataPart("sym_tool_ver", breakpadVersion)
             .build()
-        request = new Request.Builder().url(url).post(formBody).build()
+        Request request = new Request.Builder().url(url).post(formBody).build()
         logger.debug("uploadNativeSymbols, Generated request: {}", request.body().toString())
-      }
-      doLast {
-        client = new OkHttpClient()
+
+        OkHttpClient client = new OkHttpClient()
         Response response = client.newCall(request).execute()
 
         if (response.code() != 200) {