diff --git a/fints4k/src/main/kotlin/net/dankito/fints/FinTsClient.kt b/fints4k/src/main/kotlin/net/dankito/fints/FinTsClient.kt
index 72d7cffd..19de8ef8 100644
--- a/fints4k/src/main/kotlin/net/dankito/fints/FinTsClient.kt
+++ b/fints4k/src/main/kotlin/net/dankito/fints/FinTsClient.kt
@@ -938,7 +938,7 @@ open class FinTsClient @JvmOverloads constructor(
         }
 
         return TanProcedure(procedureName, parameters.securityFunction,
-            mapToTanProcedureType(parameters) ?: TanProcedureType.EnterTan)
+            mapToTanProcedureType(parameters) ?: TanProcedureType.EnterTan, mapHhdVersion(parameters))
     }
 
     protected open fun mapToTanProcedureType(parameters: TanProcedureParameters): TanProcedureType? {
@@ -987,6 +987,16 @@ open class FinTsClient @JvmOverloads constructor(
         }
     }
 
+    protected open fun mapHhdVersion(parameters: TanProcedureParameters): HHDVersion? {
+        return when {
+            technicalTanProcedureIdentificationContains(parameters, "HHD1.4") -> HHDVersion.HHD_1_4
+            technicalTanProcedureIdentificationContains(parameters, "HHD1.3") -> HHDVersion.HHD_1_3
+            parameters.versionZkaTanProcedure?.contains("1.4") == true -> HHDVersion.HHD_1_4
+            parameters.versionZkaTanProcedure?.contains("1.3") == true -> HHDVersion.HHD_1_4
+            else -> null
+        }
+    }
+
     protected open fun tanProcedureNameContains(name: String, vararg namesToTest: String): Boolean {
         namesToTest.forEach { nameToTest ->
             if (name.contains(nameToTest.toLowerCase())) {
@@ -1007,6 +1017,7 @@ open class FinTsClient @JvmOverloads constructor(
         return false
     }
 
+
     protected open fun isJobSupported(account: AccountData, supportedJob: JobParameters): Boolean {
         for (allowedJobName in account.allowedJobNames) {
             if (allowedJobName == supportedJob.jobName) {
diff --git a/fints4k/src/main/kotlin/net/dankito/fints/model/HHDVersion.kt b/fints4k/src/main/kotlin/net/dankito/fints/model/HHDVersion.kt
new file mode 100644
index 00000000..287eb8ec
--- /dev/null
+++ b/fints4k/src/main/kotlin/net/dankito/fints/model/HHDVersion.kt
@@ -0,0 +1,10 @@
+package net.dankito.fints.model
+
+
+enum class HHDVersion {
+
+    HHD_1_3,
+
+    HHD_1_4
+
+}
\ No newline at end of file
diff --git a/fints4k/src/main/kotlin/net/dankito/fints/model/TanProcedure.kt b/fints4k/src/main/kotlin/net/dankito/fints/model/TanProcedure.kt
index d8901b14..9259c9f7 100644
--- a/fints4k/src/main/kotlin/net/dankito/fints/model/TanProcedure.kt
+++ b/fints4k/src/main/kotlin/net/dankito/fints/model/TanProcedure.kt
@@ -6,7 +6,8 @@ import net.dankito.fints.messages.datenelemente.implementierte.signatur.Sicherhe
 open class TanProcedure(
     val displayName: String,
     val securityFunction: Sicherheitsfunktion,
-    val type: TanProcedureType
+    val type: TanProcedureType,
+    val hhdVersion: HHDVersion? = null
 ) {