diff --git a/Cartfile b/Cartfile
index 4b3c11b..1b01d39 100644
--- a/Cartfile
+++ b/Cartfile
@@ -1 +1,2 @@
 github "ReactiveX/RxSwift" ~> 6.2.0
+github "wultra/WultraSSLPinning"
\ No newline at end of file
diff --git a/Example/HCaptcha.xcodeproj/project.pbxproj b/Example/HCaptcha.xcodeproj/project.pbxproj
index 81c2e7c..01031c9 100644
--- a/Example/HCaptcha.xcodeproj/project.pbxproj
+++ b/Example/HCaptcha.xcodeproj/project.pbxproj
@@ -486,16 +486,22 @@
 			inputPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-HCaptcha_Example/Pods-HCaptcha_Example-frameworks.sh",
 				"${BUILT_PRODUCTS_DIR}/HCaptcha-Core-RxSwift/HCaptcha.framework",
+				"${BUILT_PRODUCTS_DIR}/PowerAuth2/PowerAuth2.framework",
 				"${BUILT_PRODUCTS_DIR}/RxCocoa/RxCocoa.framework",
 				"${BUILT_PRODUCTS_DIR}/RxRelay/RxRelay.framework",
 				"${BUILT_PRODUCTS_DIR}/RxSwift/RxSwift.framework",
+				"${BUILT_PRODUCTS_DIR}/WultraSSLPinning/WultraSSLPinning.framework",
+				"${PODS_XCFRAMEWORKS_BUILD_DIR}/PowerAuthCore/PowerAuthCore.framework/PowerAuthCore",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/HCaptcha.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/PowerAuth2.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/RxCocoa.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/RxRelay.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/RxSwift.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/WultraSSLPinning.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/PowerAuthCore.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -598,10 +604,16 @@
 			inputPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-HCaptcha_Objc_Example/Pods-HCaptcha_Objc_Example-frameworks.sh",
 				"${BUILT_PRODUCTS_DIR}/HCaptcha-Core/HCaptcha.framework",
+				"${BUILT_PRODUCTS_DIR}/PowerAuth2/PowerAuth2.framework",
+				"${BUILT_PRODUCTS_DIR}/WultraSSLPinning/WultraSSLPinning.framework",
+				"${PODS_XCFRAMEWORKS_BUILD_DIR}/PowerAuthCore/PowerAuthCore.framework/PowerAuthCore",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/HCaptcha.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/PowerAuth2.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/WultraSSLPinning.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/PowerAuthCore.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
diff --git a/Example/Podfile.lock b/Example/Podfile.lock
index bb2668c..f4a546b 100644
--- a/Example/Podfile.lock
+++ b/Example/Podfile.lock
@@ -1,9 +1,13 @@
 PODS:
   - AppSwizzle (1.3.1)
-  - HCaptcha/Core (2.0.0)
+  - HCaptcha/Core (2.0.0):
+    - WultraSSLPinning/PowerAuthIntegration
   - HCaptcha/RxSwift (2.0.0):
     - HCaptcha/Core
     - RxSwift (~> 6.2.0)
+  - PowerAuth2 (1.6.2):
+    - PowerAuthCore (~> 1.6.2)
+  - PowerAuthCore (1.6.2)
   - RxBlocking (6.2.0):
     - RxSwift (= 6.2.0)
   - RxCocoa (6.2.0):
@@ -13,6 +17,10 @@ PODS:
     - RxSwift (= 6.2.0)
   - RxSwift (6.2.0)
   - SwiftLint (0.43.1)
+  - WultraSSLPinning/Lib (1.4.0)
+  - WultraSSLPinning/PowerAuthIntegration (1.4.0):
+    - PowerAuth2 (>= 1.6.0)
+    - WultraSSLPinning/Lib
 
 DEPENDENCIES:
   - AppSwizzle (~> 1.3)
@@ -25,11 +33,14 @@ DEPENDENCIES:
 SPEC REPOS:
   trunk:
     - AppSwizzle
+    - PowerAuth2
+    - PowerAuthCore
     - RxBlocking
     - RxCocoa
     - RxRelay
     - RxSwift
     - SwiftLint
+    - WultraSSLPinning
 
 EXTERNAL SOURCES:
   HCaptcha:
@@ -37,12 +48,15 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   AppSwizzle: db36e436f56110d93e5ae0147683435df593cabc
-  HCaptcha: a4c1efafe5a049c2db09d847736e369645d1079a
+  HCaptcha: 4ce547fc4e00a50fcad0d1a9811e67703dcdc0a1
+  PowerAuth2: 18365eda20a3aaec6e1d0d92679c7e90d646cc05
+  PowerAuthCore: 733c68b8f923d49304353ac5d7871ef49f948b38
   RxBlocking: 0b29f7d2079109a8de49c411381bed7c33ef1eeb
   RxCocoa: 4baf94bb35f2c0ab31bc0cb9f1900155f646ba42
   RxRelay: e72dbfd157807478401ef1982e1c61c945c94b2f
   RxSwift: d356ab7bee873611322f134c5f9ef379fa183d8f
   SwiftLint: 99f82d07b837b942dd563c668de129a03fc3fb52
+  WultraSSLPinning: 73a73de4f89b0ac98154c3ef761ed6eee7760749
 
 PODFILE CHECKSUM: 44657674683c7639f916ef6eb6fae5387395d652
 
diff --git a/HCaptcha.podspec b/HCaptcha.podspec
index c786148..aba6282 100644
--- a/HCaptcha.podspec
+++ b/HCaptcha.podspec
@@ -25,6 +25,8 @@ invisibility is not possible.
     core.source_files = 'HCaptcha/Classes/*'
     core.frameworks = ['WebKit', 'JavaScriptCore']
 
+    core.dependency 'WultraSSLPinning/PowerAuthIntegration'
+
     core.resource_bundles = {
       'HCaptcha' => ['HCaptcha/Assets/**/*']
     }
diff --git a/HCaptcha/Classes/HCaptcha.swift b/HCaptcha/Classes/HCaptcha.swift
index d7d04bc..cde8f65 100644
--- a/HCaptcha/Classes/HCaptcha.swift
+++ b/HCaptcha/Classes/HCaptcha.swift
@@ -59,7 +59,8 @@ public class HCaptcha: NSObject {
         imghost: URL? = nil,
         host: String? = nil,
         theme: String = "light",
-        customTheme: String? = nil
+        customTheme: String? = nil,
+        sslPinning: Bool = false
     ) throws {
         let infoDict = Bundle.main.infoDictionary
 
@@ -80,7 +81,8 @@ public class HCaptcha: NSObject {
                                         imghost: imghost,
                                         host: host,
                                         theme: theme,
-                                        customTheme: customTheme)
+                                        customTheme: customTheme,
+                                        sslPinning: sslPinning)
 
         self.init(manager: HCaptchaWebViewManager(
             html: config.html,
@@ -89,7 +91,8 @@ public class HCaptcha: NSObject {
             endpoint: config.getEndpointURL(locale: locale),
             size: config.size,
             rqdata: config.rqdata,
-            theme: config.actualTheme
+            theme: config.actualTheme,
+            sslPinning: config.sslPinning
         ))
     }
 
diff --git a/HCaptcha/Classes/HCaptchaConfig.swift b/HCaptcha/Classes/HCaptchaConfig.swift
index 7bd182e..78b1a0c 100644
--- a/HCaptcha/Classes/HCaptchaConfig.swift
+++ b/HCaptcha/Classes/HCaptchaConfig.swift
@@ -100,6 +100,9 @@ struct HCaptchaConfig {
         self.customTheme ?? "\"\(theme)\""
     }
 
+    /// Enable SSL pinning
+    let sslPinning: Bool
+
     /// The Bundle that holds HCaptcha's assets
     private static let bundle: Bundle = {
         #if SWIFT_PACKAGE
@@ -144,7 +147,8 @@ struct HCaptchaConfig {
                 imghost: URL?,
                 host: String?,
                 theme: String,
-                customTheme: String?) throws {
+                customTheme: String?,
+                sslPinning: Bool) throws {
         guard let filePath = HCaptchaConfig.bundle.path(forResource: "hcaptcha", ofType: "html") else {
             throw HCaptchaError.htmlLoadError
         }
@@ -187,6 +191,7 @@ struct HCaptchaConfig {
         self.host = host
         self.theme = theme
         self.customTheme = customTheme
+        self.sslPinning = sslPinning
     }
 
     /**
diff --git a/HCaptcha/Classes/HCaptchaWebViewManager.swift b/HCaptcha/Classes/HCaptchaWebViewManager.swift
index 76fbccf..8d6e754 100644
--- a/HCaptcha/Classes/HCaptchaWebViewManager.swift
+++ b/HCaptcha/Classes/HCaptchaWebViewManager.swift
@@ -8,6 +8,7 @@
 
 import Foundation
 import WebKit
+import WultraSSLPinning
 
 
 /** Handles comunications with the webview containing the HCaptcha challenge.
@@ -89,6 +90,12 @@ internal class HCaptchaWebViewManager {
     /// Keep error If it happens before validate call
     fileprivate var lastError: HCaptchaError?
 
+    /// Enable SSL pinning
+    fileprivate var sslPinning: Bool
+
+    /// SSL pinning aware navigation delegate
+    fileprivate let webViewNavDelegate = HCaptchaWebViewNavDelegate()
+
     /// The webview that executes JS code
     lazy var webView: WKWebView = {
         let webview = WKWebView(
@@ -99,6 +106,10 @@ internal class HCaptchaWebViewManager {
         webview.accessibilityTraits = UIAccessibilityTraits.link
         webview.isHidden = true
 
+        if sslPinning {
+            webview.navigationDelegate = webViewNavDelegate
+        }
+
         return webview
     }()
 
@@ -113,8 +124,9 @@ internal class HCaptchaWebViewManager {
          - theme: Widget theme, value must be valid JS Object or String with brackets
      */
     init(html: String, apiKey: String, baseURL: URL, endpoint: URL,
-         size: HCaptchaSize, rqdata: String?, theme: String) {
+         size: HCaptchaSize, rqdata: String?, theme: String, sslPinning: Bool) {
         self.baseURL = baseURL
+        self.sslPinning = sslPinning
         self.decoder = HCaptchaDecoder { [weak self] result in
             self?.handle(result: result)
         }
diff --git a/HCaptcha/Classes/HCaptchaWebViewNavDelegate.swift b/HCaptcha/Classes/HCaptchaWebViewNavDelegate.swift
new file mode 100644
index 0000000..2d7da30
--- /dev/null
+++ b/HCaptcha/Classes/HCaptchaWebViewNavDelegate.swift
@@ -0,0 +1,30 @@
+//
+//  HCaptchaWebViewNavDelegate.swift
+//  HCaptcha
+//
+//  Copyright © 2022 HCaptcha. All rights reserved.
+//
+
+import Foundation
+import WebKit
+import WultraSSLPinning
+
+class HCaptchaWebViewNavDelegate: UIResponder, WKNavigationDelegate {
+    fileprivate static var certStore: CertStore {
+        let publicKey = "BO47Jqs1wXV9dt1q1hMHuZzUPVzGNaPn9vUqRzleMiHAIYg+zZmktobi3nKVrtExIctL9f8aTdpfwhex21jbI9g="
+        let config = CertStoreConfiguration(serviceUrl: URL(string: "https://hcaptcha.com")!,
+                                            publicKey: publicKey)
+        return .powerAuthCertStore(configuration: config)
+    }
+
+    func webView(_ webView: WKWebView,
+                 didReceive challenge: URLAuthenticationChallenge,
+                 completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+        switch HCaptchaWebViewNavDelegate.certStore.validate(challenge: challenge) {
+        case .trusted:
+            completionHandler(.performDefaultHandling, nil)
+        case .untrusted, .empty:
+            completionHandler(.cancelAuthenticationChallenge, nil)
+        }
+    }
+}
diff --git a/Package.swift b/Package.swift
index 3512d77..362cfb1 100644
--- a/Package.swift
+++ b/Package.swift
@@ -21,6 +21,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/ReactiveX/RxSwift", .upToNextMajor(from: "6.2.0"))
+        .package(url: "https://github.com/wultra/ssl-pinning-ios")
     ],
     targets: [
         .target(