diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b7f3e99d817b448769f8710ffe7f4347b869ca5..0176a56635fbd890d3e71f8161ba2cc736aa27e9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,7 @@
 
 cmake_minimum_required(VERSION 3.13)
 
-set(libcaosdb_VERSION 0.0.19)
+set(libcaosdb_VERSION 0.0.20)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MAJOR 0)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MINOR 5)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_PATCH 0)
diff --git a/conanfile.py b/conanfile.py
index 024be53f48d65d88ed25c93e57ac8ebe9a9f4ce8..04d2b1f527b0c5936c0c9a5c7d6d20a98446f1bb 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -3,7 +3,7 @@ from conans import ConanFile, CMake, tools
 
 class CaosdbConan(ConanFile):
     name = "caosdb"
-    version = "0.0.19"
+    version = "0.0.20"
     license = "AGPL-3.0-or-later"
     author = "Timm C. Fitschen <t.fitschen@indiscale.com>"
     url = "https://gitlab.indiscale.com/caosdb/src/caosdb-cpplib.git"
diff --git a/include/caosdb/data_type.h b/include/caosdb/data_type.h
index 45d82f01ba952f1c56e8e02178d6721795fbc288..c084a338272532db652b4d7df85cfa42940c6bb1 100644
--- a/include/caosdb/data_type.h
+++ b/include/caosdb/data_type.h
@@ -246,10 +246,10 @@ public:
    * Copy assignment operator.
    */
   inline auto operator=(const DataType &other) -> DataType & {
-    if(this != &other) {
+    if (this != &other) {
       this->reference_data_type.reset();
       this->list_data_type.reset();
-      if(other.wrapped != nullptr) {
+      if (other.wrapped != nullptr) {
         this->wrapped = ProtoMessageWrapper<ProtoDataType>::CopyProtoMessage(other.wrapped);
       } else {
         this->wrapped = nullptr;
@@ -262,7 +262,7 @@ public:
    * Move assignment operator.
    */
   inline auto operator=(DataType &&other) -> DataType & {
-    if(this != &other) {
+    if (this != &other) {
       this->wrapped = other.wrapped;
       other.wrapped = nullptr;
       other.reference_data_type.reset();
diff --git a/include/caosdb/entity.h b/include/caosdb/entity.h
index c261c1c5af1df71fcf19de377c617092b10deeb0..2f6e4ed96670f3c3e16749f3a2a590d491b29abe 100644
--- a/include/caosdb/entity.h
+++ b/include/caosdb/entity.h
@@ -191,10 +191,11 @@ public:
    * Return true if the underlying Protobuf messages have the same
    * serialization.
    */
-  inline auto operator==(const RepeatedPtrFieldWrapper<T,P> &other) const noexcept -> bool {
+  inline auto operator==(const RepeatedPtrFieldWrapper<T, P> &other) const noexcept -> bool {
     if (this->wrapped != nullptr && other.wrapped != nullptr && this->size() == other.size()) {
-      for(int i = 0; i < this->size(); i++) {
-        if(this->wrapped->Get(i).SerializeAsString() != other.wrapped->Get(i).SerializeAsString()) {
+      for (int i = 0; i < this->size(); i++) {
+        if (this->wrapped->Get(i).SerializeAsString() !=
+            other.wrapped->Get(i).SerializeAsString()) {
           return false;
         }
       }
@@ -208,7 +209,7 @@ public:
    * Return true if the underlying Protobuf messages have a different
    * serialization.
    */
-  inline auto operator!=(const RepeatedPtrFieldWrapper<T,P> &other) const noexcept -> bool {
+  inline auto operator!=(const RepeatedPtrFieldWrapper<T, P> &other) const noexcept -> bool {
     return !(*this == other);
   }
 
diff --git a/test/test_entity.cpp b/test/test_entity.cpp
index f800d5a85a878728d73d9bbd23e1d92af99f226f..2b9a8d900864617abc23bdd1d05782a1eb65c60b 100644
--- a/test/test_entity.cpp
+++ b/test/test_entity.cpp
@@ -152,16 +152,19 @@ TEST(test_entity, test_copy_constructor) {
   property.set_description("the prop-desc");
   property.set_name("the-prop-name");
   property.mutable_value()->mutable_list_values()->mutable_values()->Add()->set_double_value(25.5);
-  property.mutable_data_type()->mutable_list_data_type()->set_atomic_data_type(ProtoAtomicDataType::ATOMIC_DATA_TYPE_DOUBLE);
+  property.mutable_data_type()->mutable_list_data_type()->set_atomic_data_type(
+    ProtoAtomicDataType::ATOMIC_DATA_TYPE_DOUBLE);
   EntityResponse entity_response;
   entity_response.mutable_entity()->set_id("the-id");
   entity_response.mutable_entity()->set_name("the-name");
   entity_response.mutable_entity()->set_role(ProtoEntityRole::ENTITY_ROLE_RECORD);
   entity_response.mutable_entity()->set_description("the description");
   entity_response.mutable_entity()->set_unit("the-unit");
-  entity_response.mutable_entity()->mutable_value()->mutable_scalar_value()->set_string_value("the-value");
+  entity_response.mutable_entity()->mutable_value()->mutable_scalar_value()->set_string_value(
+    "the-value");
   entity_response.mutable_entity()->mutable_version()->set_id("version-id");
-  entity_response.mutable_entity()->mutable_data_type()->mutable_reference_data_type()->set_name("refname");
+  entity_response.mutable_entity()->mutable_data_type()->mutable_reference_data_type()->set_name(
+    "refname");
   entity_response.mutable_entity()->mutable_file_descriptor();
   entity_response.mutable_entity()->mutable_properties()->Add()->CopyFrom(property);
   entity_response.mutable_entity()->mutable_parents()->Add()->CopyFrom(parent);
@@ -204,7 +207,8 @@ TEST(test_entity, test_move_constructor) {
   property.set_description("the prop-desc");
   property.set_name("the-prop-name");
   property.mutable_value()->mutable_list_values()->mutable_values()->Add()->set_double_value(25.5);
-  property.mutable_data_type()->mutable_list_data_type()->set_atomic_data_type(ProtoAtomicDataType::ATOMIC_DATA_TYPE_DOUBLE);
+  property.mutable_data_type()->mutable_list_data_type()->set_atomic_data_type(
+    ProtoAtomicDataType::ATOMIC_DATA_TYPE_DOUBLE);
   EntityResponse entity_response;
   entity_response.mutable_errors()->Add()->set_code(25);
   entity_response.mutable_errors()->Mutable(0)->set_description("asdf");
@@ -217,9 +221,11 @@ TEST(test_entity, test_move_constructor) {
   entity_response.mutable_entity()->set_role(ProtoEntityRole::ENTITY_ROLE_RECORD);
   entity_response.mutable_entity()->set_description("the description");
   entity_response.mutable_entity()->set_unit("the-unit");
-  entity_response.mutable_entity()->mutable_value()->mutable_scalar_value()->set_string_value("the-value");
+  entity_response.mutable_entity()->mutable_value()->mutable_scalar_value()->set_string_value(
+    "the-value");
   entity_response.mutable_entity()->mutable_version()->set_id("version-id");
-  entity_response.mutable_entity()->mutable_data_type()->mutable_reference_data_type()->set_name("refname");
+  entity_response.mutable_entity()->mutable_data_type()->mutable_reference_data_type()->set_name(
+    "refname");
   entity_response.mutable_entity()->mutable_file_descriptor();
   entity_response.mutable_entity()->mutable_properties()->Add()->CopyFrom(property);
   entity_response.mutable_entity()->mutable_parents()->Add()->CopyFrom(parent);