diff --git a/Cargo.lock b/Cargo.lock
index da9a9c8..cb94d75 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -179,9 +181,9 @@ checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
 
 [[package]]
 name = "rust_decimal"
-version = "1.13.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72e80c4f9a71b5949e283189c3c3ae35fedddecfe112e75c9d58751c36605b62"
+checksum = "c5446d1cf2dfe2d6367c8b27f2082bdf011e60e76fa1fcd140047f535156d6e7"
 dependencies = [
  "arrayvec",
  "num-traits",
@@ -197,6 +199,10 @@ checksum = "ec7505abeacaec74ae4778d9d9328fe5a5d04253220a85c4ee022239fc996d03"
 [[package]]
 name = "service"
 version = "0.1.0"
+dependencies = [
+ "chrono",
+ "rust_decimal",
+]
 
 [[package]]
 name = "strsim"
diff --git a/service/Cargo.toml b/service/Cargo.toml
index 4e0d654..a705a09 100644
--- a/service/Cargo.toml
+++ b/service/Cargo.toml
@@ -7,3 +7,5 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+chrono = "0.4"
+rust_decimal = "1.15"
diff --git a/service/src/add_expense.rs b/service/src/add_expense.rs
index 87d9b1b..86c9c9d 100644
--- a/service/src/add_expense.rs
+++ b/service/src/add_expense.rs
@@ -16,7 +16,7 @@
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-use crate::commands::interface::Command;
+use crate::interface::Command;
 use chrono::Date;
 use chrono::Utc;
 use rust_decimal::prelude::*;