diff --git a/doc/typeutils.qdoc b/doc/typeutils.qdoc
index ce521856..06cc79a1 100644
--- a/doc/typeutils.qdoc
+++ b/doc/typeutils.qdoc
@@ -301,6 +301,14 @@
             \li Types::UnitAmpereHour
             \li 48
             \li The value of the \l{Param} has unit \tt {[Ah]} \unicode{0x2192} ampere hour.
+        \row
+            \li Types::UnitMicroSiemensPerCentimeter
+            \li 49
+            \li The value of the \l{Param} has unit \tt {[μS/cm]} \unicode{0x2192} microsiemens per centimeter (conductivity).
+        \row
+            \li Types::UnitDuration
+            \li 50
+            \li The value of the \l{Param} has unit \tt {[ms]} \unicode{0x2192} milliseconds and represents a duration.
     \endtable
 
     \chapter UUID Types
diff --git a/libnymea/typeutils.h b/libnymea/typeutils.h
index 1a83b51f..d7c91dfc 100644
--- a/libnymea/typeutils.h
+++ b/libnymea/typeutils.h
@@ -129,7 +129,9 @@ public:
         UnitMilliVolt,
         UnitVoltAmpere,
         UnitVoltAmpereReactive,
-        UnitAmpereHour
+        UnitAmpereHour,
+        UnitMicroSiemensPerCentimeter,
+        UnitDuration
     };
     Q_ENUM(Unit)
 
diff --git a/nymea.pri b/nymea.pri
index f6356cfa..718a0f9c 100644
--- a/nymea.pri
+++ b/nymea.pri
@@ -6,7 +6,7 @@ NYMEA_PLUGINS_PATH=/usr/lib/$$system('dpkg-architecture -q DEB_HOST_MULTIARCH')/
 
 # define protocol versions
 JSON_PROTOCOL_VERSION_MAJOR=1
-JSON_PROTOCOL_VERSION_MINOR=7
+JSON_PROTOCOL_VERSION_MINOR=8
 REST_API_VERSION=1
 
 DEFINES += NYMEA_VERSION_STRING=\\\"$${NYMEA_VERSION_STRING}\\\" \
diff --git a/tests/auto/api.json b/tests/auto/api.json
index be5b4be2..1563bd43 100644
--- a/tests/auto/api.json
+++ b/tests/auto/api.json
@@ -1,4 +1,4 @@
-1.7
+1.8
 {
     "methods": {
         "Actions.ExecuteAction": {
@@ -1565,7 +1565,9 @@
             "UnitMilliVolt",
             "UnitVoltAmpere",
             "UnitVoltAmpereReactive",
-            "UnitAmpereHour"
+            "UnitAmpereHour",
+            "UnitMicroSiemensPerCentimeter",
+            "UnitDuration"
         ],
         "UserError": [
             "UserErrorNoError",