diff --git a/include/caosdb/entity.h b/include/caosdb/entity.h
index 3a8f1f9effb149ced867b5012d38296278e9832f..831200c0ff7fdafbd265bb4778b62f51003b6836 100644
--- a/include/caosdb/entity.h
+++ b/include/caosdb/entity.h
@@ -516,10 +516,10 @@ public:
   auto SetValue(const double value) -> StatusCode;
   auto SetValue(const std::vector<std::string> &values) -> StatusCode;
   auto SetValue(const std::vector<char *> &values) -> StatusCode;
-  auto SetValue(const std::vector<int32_t> &values) -> StatusCode;
+  auto SetValue(const std::vector<int64_t> &values) -> StatusCode;
   auto SetValue(const std::vector<double> &values) -> StatusCode;
   auto SetValue(const std::vector<bool> &values) -> StatusCode;
-  auto SetValue(const int32_t value) -> StatusCode;
+  auto SetValue(const int64_t value) -> StatusCode;
   auto SetValue(const bool value) -> StatusCode;
 
   /**
@@ -670,10 +670,10 @@ public:
   auto SetValue(const double value) -> StatusCode;
   auto SetValue(const std::vector<std::string> &values) -> StatusCode;
   auto SetValue(const std::vector<char *> &values) -> StatusCode;
-  auto SetValue(const std::vector<int32_t> &values) -> StatusCode;
+  auto SetValue(const std::vector<int64_t> &values) -> StatusCode;
   auto SetValue(const std::vector<double> &values) -> StatusCode;
   auto SetValue(const std::vector<bool> &values) -> StatusCode;
-  auto SetValue(const int32_t value) -> StatusCode;
+  auto SetValue(const int64_t value) -> StatusCode;
   auto SetValue(const bool value) -> StatusCode;
 
   auto SetUnit(const std::string &unit) -> void;
diff --git a/include/caosdb/value.h b/include/caosdb/value.h
index 2ec817e54ba32561d2c66c843a5451c143beacf0..30ee2b1c26fd123988d8591c8ed33cd3621ce5b8 100644
--- a/include/caosdb/value.h
+++ b/include/caosdb/value.h
@@ -110,7 +110,6 @@ public:
   explicit inline Value(int64_t value) : ProtoMessageWrapper<ProtoValue>() {
     this->wrapped->mutable_scalar_value()->set_integer_value(value);
   }
-  explicit inline Value(int value) : Value((int64_t)value) {}
   explicit inline Value(bool value) : ProtoMessageWrapper<ProtoValue>() {
     this->wrapped->mutable_scalar_value()->set_boolean_value(value);
   }
diff --git a/include/ccaosdb.h b/include/ccaosdb.h
index 38b5d5ea0c7540610d7d5b21003f50c35f84568a..a60189522dfa4f5493fa201f63c3eb3df0d992d7 100644
--- a/include/ccaosdb.h
+++ b/include/ccaosdb.h
@@ -20,7 +20,7 @@
  *
  */
 
-#include <cstdint> // for uint32_t
+#include <cstdint> // for int64_t
 
 #ifdef __cplusplus
 extern "C" {
@@ -347,11 +347,11 @@ int caosdb_entity_entity_get_datatype(caosdb_entity_entity *entity, char **name,
                                       bool *is_list);
 int caosdb_entity_entity_get_unit(caosdb_entity_entity *entity, char **out);
 
-int caosdb_entity_entity_get_int_value(caosdb_entity_entity *entity, int32_t *out);
+int caosdb_entity_entity_get_int_value(caosdb_entity_entity *entity, int64_t *out);
 int caosdb_entity_entity_get_double_value(caosdb_entity_entity *entity, double *out);
 int caosdb_entity_entity_get_boolean_value(caosdb_entity_entity *entity, bool *out);
 int caosdb_entity_entity_get_string_value(caosdb_entity_entity *entity, char **out);
-int caosdb_entity_entity_get_int_list_value_at(caosdb_entity_entity *entity, int32_t *out,
+int caosdb_entity_entity_get_int_list_value_at(caosdb_entity_entity *entity, int64_t *out,
                                                const int index);
 int caosdb_entity_entity_get_double_list_value_at(caosdb_entity_entity *entity, double *out,
                                                   const int index);
@@ -389,11 +389,11 @@ int caosdb_entity_property_get_datatype(caosdb_entity_property *property, char *
                                         bool *is_list);
 int caosdb_entity_property_get_unit(caosdb_entity_property *property, char **out);
 
-int caosdb_entity_property_get_int_value(caosdb_entity_property *property, int32_t *out);
+int caosdb_entity_property_get_int_value(caosdb_entity_property *property, int64_t *out);
 int caosdb_entity_property_get_double_value(caosdb_entity_property *property, double *out);
 int caosdb_entity_property_get_boolean_value(caosdb_entity_property *property, bool *out);
 int caosdb_entity_property_get_string_value(caosdb_entity_property *property, char **out);
-int caosdb_entity_property_get_int_list_value_at(caosdb_entity_property *property, int32_t *out,
+int caosdb_entity_property_get_int_list_value_at(caosdb_entity_property *property, int64_t *out,
                                                  const int index);
 int caosdb_entity_property_get_double_list_value_at(caosdb_entity_property *property, double *out,
                                                     const int index);
@@ -431,11 +431,11 @@ int caosdb_entity_entity_set_datatype(caosdb_entity_entity *entity, const char *
                                       const bool is_ref, const bool is_list);
 int caosdb_entity_entity_set_unit(caosdb_entity_entity *entity, const char *unit);
 // TODO(fspreck) replace by more specific setters
-int caosdb_entity_entity_set_int_value(caosdb_entity_entity *entity, const int32_t value);
+int caosdb_entity_entity_set_int_value(caosdb_entity_entity *entity, const int64_t value);
 int caosdb_entity_entity_set_double_value(caosdb_entity_entity *entity, const double value);
 int caosdb_entity_entity_set_boolean_value(caosdb_entity_entity *entity, const bool value);
 int caosdb_entity_entity_set_string_value(caosdb_entity_entity *entity, const char *value);
-int caosdb_entity_entity_set_int_list_value(caosdb_entity_entity *entity, const int32_t *value,
+int caosdb_entity_entity_set_int_list_value(caosdb_entity_entity *entity, const int64_t *value,
                                             const int length);
 int caosdb_entity_entity_set_double_list_value(caosdb_entity_entity *entity, const double *value,
                                                const int length);
@@ -460,12 +460,12 @@ int caosdb_entity_property_set_datatype(caosdb_entity_property *property, const
 int caosdb_entity_property_set_importance(caosdb_entity_property *property, const char *importance);
 int caosdb_entity_property_set_unit(caosdb_entity_property *property, const char *unit);
 
-int caosdb_entity_property_set_int_value(caosdb_entity_property *property, const int32_t value);
+int caosdb_entity_property_set_int_value(caosdb_entity_property *property, const int64_t value);
 int caosdb_entity_property_set_double_value(caosdb_entity_property *property, const double value);
 int caosdb_entity_property_set_boolean_value(caosdb_entity_property *property, const bool value);
 int caosdb_entity_property_set_string_value(caosdb_entity_property *property, const char *value);
 int caosdb_entity_property_set_int_list_value(caosdb_entity_property *property,
-                                              const int32_t *value, const int length);
+                                              const int64_t *value, const int length);
 int caosdb_entity_property_set_double_list_value(caosdb_entity_property *property,
                                                  const double *value, const int length);
 int caosdb_entity_property_set_boolean_list_value(caosdb_entity_property *property,
diff --git a/src/caosdb/entity.cpp b/src/caosdb/entity.cpp
index 18c9cb525b97ba9f638b2b300908cbc404f51cae..55c5936407fa41b44d50ffa5d1dee69a4428b5e1 100644
--- a/src/caosdb/entity.cpp
+++ b/src/caosdb/entity.cpp
@@ -124,7 +124,7 @@ auto Property::SetValue(const std::vector<char *> &values) -> StatusCode {
   return SetValue(Value(values));
 }
 
-auto Property::SetValue(const std::vector<int32_t> &values) -> StatusCode {
+auto Property::SetValue(const std::vector<int64_t> &values) -> StatusCode {
   return SetValue(Value(values));
 }
 
@@ -136,7 +136,7 @@ auto Property::SetValue(const std::vector<bool> &values) -> StatusCode {
   return SetValue(Value(values));
 }
 
-auto Property::SetValue(const int32_t value) -> StatusCode { return SetValue(Value(value)); }
+auto Property::SetValue(const int64_t value) -> StatusCode { return SetValue(Value(value)); }
 
 auto Property::SetValue(const bool value) -> StatusCode { return SetValue(Value(value)); }
 
@@ -222,7 +222,7 @@ auto Entity::SetValue(const std::vector<char *> &values) -> StatusCode {
   return SetValue(Value(values));
 }
 
-auto Entity::SetValue(const std::vector<int32_t> &values) -> StatusCode {
+auto Entity::SetValue(const std::vector<int64_t> &values) -> StatusCode {
   return SetValue(Value(values));
 }
 
@@ -234,7 +234,7 @@ auto Entity::SetValue(const std::vector<bool> &values) -> StatusCode {
   return SetValue(Value(values));
 }
 
-auto Entity::SetValue(const int32_t value) -> StatusCode { return SetValue(Value(value)); }
+auto Entity::SetValue(const int64_t value) -> StatusCode { return SetValue(Value(value)); }
 
 auto Entity::SetValue(const bool value) -> StatusCode { return SetValue(Value(value)); }
 
diff --git a/src/ccaosdb.cpp b/src/ccaosdb.cpp
index b4c7ea1aac3aae3fd5ac539815883d0ea905d56f..8145d921c141c82e9e72346c217064710ba30a1e 100644
--- a/src/ccaosdb.cpp
+++ b/src/ccaosdb.cpp
@@ -641,7 +641,7 @@ ERROR_RETURN_CODE(GENERIC_ERROR,
                   })
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_entity_get_int_value(caosdb_entity_entity *entity,
-                                                         int32_t *out),
+                                                         int64_t *out),
                   {
                     auto *wrapped_entity = WRAPPED_ENTITY_CAST(entity);
                     *out = wrapped_entity->GetValue().AsInteger();
@@ -667,7 +667,7 @@ CAOSDB_ENTITY_GET(string_value, GetValue().AsString())
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_entity_get_int_list_value_at(caosdb_entity_entity *entity,
-                                                                 int32_t *out, const int index),
+                                                                 int64_t *out, const int index),
                   {
                     auto *wrapped_entity = WRAPPED_ENTITY_CAST(entity);
                     auto value_list = wrapped_entity->GetValue().AsList();
@@ -896,7 +896,7 @@ CAOSDB_PROPERTY_GET(unit, GetUnit())
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_property_get_int_value(caosdb_entity_property *property,
-                                                           int32_t *out),
+                                                           int64_t *out),
                   {
                     auto *wrapped_property = WRAPPED_PROPERTY_CAST(property);
                     *out = wrapped_property->GetValue().AsInteger();
@@ -922,7 +922,7 @@ CAOSDB_PROPERTY_GET(string_value, GetValue().AsString())
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_property_get_int_list_value_at(caosdb_entity_property *property,
-                                                                   int32_t *out, const int index),
+                                                                   int64_t *out, const int index),
                   {
                     auto *wrapped_property = WRAPPED_PROPERTY_CAST(property);
                     auto value_list = wrapped_property->GetValue().AsList();
@@ -1039,7 +1039,7 @@ CAOSDB_ENTITY_SET(unit, unit, wrapped_entity->SetUnit(std::string(unit));)
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_entity_set_int_value(caosdb_entity_entity *entity,
-                                                         const int32_t value),
+                                                         const int64_t value),
                   {
                     auto *wrapped_entity =
                       static_cast<caosdb::entity::Entity *>(entity->wrapped_entity);
@@ -1079,12 +1079,12 @@ ERROR_RETURN_CODE(GENERIC_ERROR,
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_entity_set_int_list_value(caosdb_entity_entity *entity,
-                                                              const int32_t *value,
+                                                              const int64_t *value,
                                                               const int length),
                   {
                     auto *wrapped_entity =
                       static_cast<caosdb::entity::Entity *>(entity->wrapped_entity);
-                    std::vector<int32_t> value_list;
+                    std::vector<int64_t> value_list;
                     for (int i = 0; i < length; i++) {
                       value_list.push_back(value[i]);
                     }
@@ -1226,7 +1226,7 @@ CAOSDB_PROPERTY_SET(unit, unit, wrapped_property->SetUnit(std::string(unit));)
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_property_set_int_value(caosdb_entity_property *property,
-                                                           const int32_t value),
+                                                           const int64_t value),
                   {
                     auto *wrapped_property =
                       static_cast<caosdb::entity::Property *>(property->wrapped_property);
@@ -1266,12 +1266,12 @@ ERROR_RETURN_CODE(GENERIC_ERROR,
 
 ERROR_RETURN_CODE(GENERIC_ERROR,
                   int caosdb_entity_property_set_int_list_value(caosdb_entity_property *property,
-                                                                const int32_t *value,
+                                                                const int64_t *value,
                                                                 const int length),
                   {
                     auto *wrapped_property =
                       static_cast<caosdb::entity::Property *>(property->wrapped_property);
-                    std::vector<int32_t> value_list;
+                    std::vector<int64_t> value_list;
                     for (int i = 0; i < length; i++) {
                       value_list.push_back(value[i]);
                     }
diff --git a/test/test_value.cpp b/test/test_value.cpp
index 74d30f04b621a0e118bc7591a07aab052786c790..855d0101d36e48eee0f6b6d0215ad491af9aa677 100644
--- a/test/test_value.cpp
+++ b/test/test_value.cpp
@@ -68,7 +68,7 @@ TEST(test_value, test_string) {
 
   // Test inequality
   Value string1("1");
-  Value int1(1);
+  Value int1(static_cast<int64_t>(1));
   EXPECT_FALSE(string1 == int1);
 }
 
@@ -93,7 +93,7 @@ TEST(test_value, test_double) {
 }
 
 TEST(test_value, test_integer) {
-  Value value(1337);
+  Value value(static_cast<int64_t>(1337));
   EXPECT_FALSE(value.IsNull());
   EXPECT_FALSE(value.IsString());
   EXPECT_FALSE(value.IsDouble());