diff --git a/CHANGELOG.md b/CHANGELOG.md
index b725e8a2f..0f3156e39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,12 +4,14 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+
+## [v1.7.4] - 2021-01-23
+
 ### Changed
 
 - introduced parallelism control options (experimental).
 
 
-
 ## [v1.7.3] - 2021-01-08
 
 ### Changed
@@ -157,7 +159,8 @@ with Self Organizing MAps and eXtrAs (pronounced as "rosomaha", from russian "р
 
 - Initial commit
 
-[Unreleased]: https://github.com/reinterpretcat/vrp/compare/v1.7.3...HEAD
+[Unreleased]: https://github.com/reinterpretcat/vrp/compare/v1.7.4...HEAD
+[v1.7.3]: https://github.com/reinterpretcat/vrp/compare/v1.7.3...v1.7.4
 [v1.7.3]: https://github.com/reinterpretcat/vrp/compare/v1.7.2...v1.7.3
 [v1.7.2]: https://github.com/reinterpretcat/vrp/compare/v1.7.1...v1.7.2
 [v1.7.1]: https://github.com/reinterpretcat/vrp/compare/1.7.0...v1.7.1
diff --git a/README.md b/README.md
index ca8289c6c..7c5de4b96 100644
--- a/README.md
+++ b/README.md
@@ -30,12 +30,12 @@ You can install vrp solver using three different ways:
 
 ## Install from Docker
 
-The fastest way to get vrp solver on your environment is to use `docker` image:
+The fastest way to try vrp solver on your environment is to use `docker` image (not performance optimized):
 
 * **run public image** from `Github Container Registry`:
 
 ```bash
-    docker run -it -v $(pwd):/repo --name vrp-cli --rm ghcr.io/reinterpretcat/vrp/vrp-cli:1.7.3
+    docker run -it -v $(pwd):/repo --name vrp-cli --rm ghcr.io/reinterpretcat/vrp/vrp-cli:1.7.4
 ```
 
 * **build image locally** using `Dockerfile` provided:
diff --git a/docs/src/getting-started/installation.md b/docs/src/getting-started/installation.md
index f773c37c9..7e466b362 100644
--- a/docs/src/getting-started/installation.md
+++ b/docs/src/getting-started/installation.md
@@ -2,10 +2,11 @@
 
 ## Install from Docker
 
-The fastest way to get vrp solver on your environment is to use public `docker` image from `Github Container Registry`:
+The fastest way to try vrp solver on your environment is to use public `docker` image from `Github Container Registry`
+(not performance optimized):
 
 ```bash
-    docker run -it -v $(pwd):/repo --name vrp-cli --rm ghcr.io/reinterpretcat/vrp/vrp-cli:1.7.3
+    docker run -it -v $(pwd):/repo --name vrp-cli --rm ghcr.io/reinterpretcat/vrp/vrp-cli:1.7.4
 ```
 
 ## Install from source
diff --git a/examples/json-pragmatic/Cargo.toml b/examples/json-pragmatic/Cargo.toml
index 6315d58ed..6c143ede8 100644
--- a/examples/json-pragmatic/Cargo.toml
+++ b/examples/json-pragmatic/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "json-pragmatic"
-version = "1.7.3"
+version = "1.7.4"
 authors = ["Ilya Builuk <ilya.builuk@gmail.com>"]
 license = "Apache-2.0"
 keywords = ["vrp", "optimization"]
@@ -13,7 +13,7 @@ description = "An examples for solving rich VRP"
 publish = false
 
 [dependencies]
-vrp-pragmatic = { path = "../../vrp-pragmatic", version = "1.7.3" }
+vrp-pragmatic = { path = "../../vrp-pragmatic", version = "1.7.4" }
 
 [dev-dependencies]
 criterion = "0.3.3"
diff --git a/vrp-cli/Cargo.toml b/vrp-cli/Cargo.toml
index 229dd097e..95e315d92 100644
--- a/vrp-cli/Cargo.toml
+++ b/vrp-cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vrp-cli"
-version = "1.7.3"
+version = "1.7.4"
 authors = ["Ilya Builuk <ilya.builuk@gmail.com>"]
 license = "Apache-2.0"
 keywords = ["vrp", "optimization"]
@@ -23,9 +23,9 @@ name = "vrp_cli"
 crate-type = ["cdylib", "lib"]
 
 [dependencies]
-vrp-core = { path = "../vrp-core", version = "1.7.3" }
-vrp-scientific = { path = "../vrp-scientific", version = "1.7.3", optional = true }
-vrp-pragmatic = { path = "../vrp-pragmatic", version = "1.7.3" }
+vrp-core = { path = "../vrp-core", version = "1.7.4" }
+vrp-scientific = { path = "../vrp-scientific", version = "1.7.4", optional = true }
+vrp-pragmatic = { path = "../vrp-pragmatic", version = "1.7.4" }
 
 csv = { version = "1.1.5", optional = true }
 serde_json = "1.0.61"
diff --git a/vrp-core/Cargo.toml b/vrp-core/Cargo.toml
index 5b8c6523d..382ee0d8f 100644
--- a/vrp-core/Cargo.toml
+++ b/vrp-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vrp-core"
-version = "1.7.3"
+version = "1.7.4"
 authors = ["Ilya Builuk <ilya.builuk@gmail.com>"]
 license = "Apache-2.0"
 keywords = ["vrp", "optimization"]
diff --git a/vrp-pragmatic/Cargo.toml b/vrp-pragmatic/Cargo.toml
index 15b4ef825..cf82fff1c 100644
--- a/vrp-pragmatic/Cargo.toml
+++ b/vrp-pragmatic/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vrp-pragmatic"
-version = "1.7.3"
+version = "1.7.4"
 authors = ["Ilya Builuk <ilya.builuk@gmail.com>"]
 license = "Apache-2.0"
 keywords = ["vrp", "optimization"]
@@ -12,7 +12,7 @@ edition = "2018"
 description = "An extension logic for solving rich VRP"
 
 [dependencies]
-vrp-core = { path = "../vrp-core", version = "1.7.3" }
+vrp-core = { path = "../vrp-core", version = "1.7.4" }
 
 serde = { version = "1.0.118", features = ["derive"] }
 serde_json = "1.0.61"
diff --git a/vrp-scientific/Cargo.toml b/vrp-scientific/Cargo.toml
index 5aaa87fde..8938b49e4 100644
--- a/vrp-scientific/Cargo.toml
+++ b/vrp-scientific/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vrp-scientific"
-version = "1.7.3"
+version = "1.7.4"
 authors = ["Ilya Builuk <ilya.builuk@gmail.com>"]
 license = "Apache-2.0"
 keywords = ["vrp", "optimization"]
@@ -13,4 +13,4 @@ description = "An extension logic for solving scientific VRP"
 
 
 [dependencies]
-vrp-core = { path = "../vrp-core", version = "1.7.3" }
+vrp-core = { path = "../vrp-core", version = "1.7.4" }