diff --git a/Cargo.lock b/Cargo.lock
index 43b701ee..87501b30 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -675,7 +675,7 @@ dependencies = [
 
 [[package]]
 name = "fluence-app-service"
-version = "0.1.4"
+version = "0.1.5"
 dependencies = [
  "fluence-faas",
  "log",
@@ -686,7 +686,7 @@ dependencies = [
 
 [[package]]
 name = "fluence-faas"
-version = "0.1.4"
+version = "0.1.5"
 dependencies = [
  "cmd_lib",
  "env_logger 0.7.1",
@@ -794,7 +794,7 @@ checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
 [[package]]
 name = "frepl"
-version = "0.1.7"
+version = "0.1.8"
 dependencies = [
  "anyhow",
  "clap",
diff --git a/fluence-app-service/Cargo.toml b/fluence-app-service/Cargo.toml
index b8fbeffe..4884d778 100644
--- a/fluence-app-service/Cargo.toml
+++ b/fluence-app-service/Cargo.toml
@@ -1,13 +1,13 @@
 [package]
 name = "fluence-app-service"
 description = "Fluence Application Service"
-version = "0.1.4"
+version = "0.1.5"
 authors = ["Fluence Labs"]
 license = "Apache-2.0"
 edition = "2018"
 
 [dependencies]
-fluence-faas = { path = "../fluence-faas", version = "0.1.4" }
+fluence-faas = { path = "../fluence-faas", version = "0.1.5" }
 
 log = "0.4.8"
 serde_json = "1.0.53"
diff --git a/fluence-faas/Cargo.toml b/fluence-faas/Cargo.toml
index 80e74a3c..91d0c4d3 100644
--- a/fluence-faas/Cargo.toml
+++ b/fluence-faas/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "fluence-faas"
 description = "Fluence FaaS"
-version = "0.1.4"
+version = "0.1.5"
 authors = ["Fluence Labs"]
 license = "Apache-2.0"
 edition = "2018"
diff --git a/fluence-faas/src/faas_interface.rs b/fluence-faas/src/faas_interface.rs
index c1d027fd..2fd4d472 100644
--- a/fluence-faas/src/faas_interface.rs
+++ b/fluence-faas/src/faas_interface.rs
@@ -23,6 +23,7 @@ use serde::Serializer;
 
 use std::fmt;
 use std::collections::HashMap;
+use itertools::Itertools;
 
 #[derive(Debug, PartialEq, Clone)]
 pub struct FaaSInterface<'a> {
@@ -69,13 +70,21 @@ impl<'a> fmt::Display for FaaSInterface<'a> {
             for (name, signature) in functions.iter() {
                 write!(f, "  pub fn {}(", name)?;
 
-                for arg in signature.arguments {
-                    write!(f, "{}: {}", arg.name, type_text_view(&arg.ty))?;
-                }
+                let args = signature
+                    .arguments
+                    .iter()
+                    .map(|arg| format!("{}: {}", arg.name, type_text_view(&arg.ty)))
+                    .join(", ");
+
                 if signature.output_types.is_empty() {
-                    writeln!(f, ")")?;
+                    writeln!(f, "{})", args)?;
                 } else if signature.output_types.len() == 1 {
-                    writeln!(f, ") -> {}", type_text_view(&signature.output_types[0]))?;
+                    writeln!(
+                        f,
+                        "{}) -> {}",
+                        args,
+                        type_text_view(&signature.output_types[0])
+                    )?;
                 } else {
                     // At now, multi values aren't supported - only one output type is possible
                     unimplemented!()
diff --git a/tools/repl/Cargo.toml b/tools/repl/Cargo.toml
index a58ff2d7..e7f3e46c 100644
--- a/tools/repl/Cargo.toml
+++ b/tools/repl/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "frepl"
 description = "Fluence FCE REPL intended for testing purposes"
-version = "0.1.7"
+version = "0.1.8"
 authors = ["Fluence Labs"]
 repository = "https://github.com/fluencelabs/fce/tools/repl"
 license = "Apache-2.0"
@@ -12,7 +12,7 @@ name = "fce-repl"
 path = "src/main.rs"
 
 [dependencies]
-fluence-app-service = { path = "../../fluence-app-service", version = "0.1.4", features = ["raw-module-api"] }
+fluence-app-service = { path = "../../fluence-app-service", version = "0.1.5", features = ["raw-module-api"] }
 
 anyhow = "1.0.31"
 clap = "2.33.1"