diff --git a/README.md b/README.md
index 7dea854..d22cf7c 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,13 @@
 # demo-kotlin-cli
+
+## Use Case Diagram
+
+![Class Diagram](http://www.plantuml.com/plantuml/proxy?cache=no&src=https://raw.githubusercontent.com/djvelimir/demo-kotlin-cli/main/diagrams/UseCase.puml)
+
+## Sequence Diagram
+
+![Class Diagram](http://www.plantuml.com/plantuml/proxy?cache=no&src=https://raw.githubusercontent.com/djvelimir/demo-kotlin-cli/main/diagrams/Sequence.puml)
+
+## Class Diagram
+
+![Class Diagram](http://www.plantuml.com/plantuml/proxy?cache=no&src=https://raw.githubusercontent.com/djvelimir/demo-kotlin-cli/main/diagrams/Class.puml)
diff --git a/diagrams/Class.puml b/diagrams/Class.puml
new file mode 100644
index 0000000..4a3bc0c
--- /dev/null
+++ b/diagrams/Class.puml
@@ -0,0 +1,73 @@
+@startuml Class
+interface ArgumentValidator {
+    + validate(args: String[]): boolean
+}
+
+class ArgumentValidatorImpl {
+}
+
+interface ArgumentProcessor {
+    + process(args: String[])
+}
+
+class ArgumentProcessorImpl {
+    - argumentValidator: ArgumentValidator
+    - passwordGenerator: PasswordGenerator
+    - terminal: Terminal
+}
+
+interface Terminal {
+    + show(message: String)
+}
+
+class TerminalImpl {
+}
+
+interface PasswordGenerator {
+    + generate(): String
+}
+
+class PasswordGeneratorImpl {
+    - passwordLength: int
+    - randomCharacterGenerator: RandomCharacterGenerator
+    - stringShuffler: StringShuffler
+}
+
+interface RandomCharacterGenerator {
+    + generateUppercaseCharacter(): char
+    + generateLowercaseCharacter(): char
+    + generateDigitCharacter(): char
+    + generateSpecialCharacter(): char
+    + generateAllowedCharacter(): char
+}
+
+class RandomCharacterGeneratorImpl {
+    - uppercaseCharacters: String
+    - lowercaseCharacters: String
+    - digitCharacters: String
+    - specialCharacters: String
+    - allowedCharacters: String
+    - random: Random
+}
+
+interface StringShuffler {
+    + shuffle(characters: String): String
+}
+
+class StringShufflerImpl {
+}
+
+ArgumentValidator <|-- ArgumentValidatorImpl
+ArgumentProcessor <|-- ArgumentProcessorImpl
+Terminal <|-- TerminalImpl
+PasswordGenerator <|-- PasswordGeneratorImpl
+RandomCharacterGenerator <|-- RandomCharacterGeneratorImpl
+StringShuffler <|-- StringShufflerImpl
+
+ArgumentProcessorImpl *--l ArgumentValidator
+ArgumentProcessorImpl *--d PasswordGenerator
+ArgumentProcessorImpl *--r Terminal
+
+PasswordGeneratorImpl *--l RandomCharacterGenerator
+PasswordGeneratorImpl *--r StringShuffler
+@enduml
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diff --git a/diagrams/Sequence.puml b/diagrams/Sequence.puml
new file mode 100644
index 0000000..993f41e
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+++ b/diagrams/Sequence.puml
@@ -0,0 +1,85 @@
+@startuml Sequence
+participant Main as app
+participant ArgumentProcessorImpl as argumentProcessor
+participant ArgumentValidatorImpl as argumentValidator
+participant PasswordGeneratorImpl as passwordGenerator
+participant RandomCharacterGeneratorImpl as randomCharacterGenerator
+participant StringShufflerImpl as stringShuffler
+participant TerminalImpl as terminal
+
+activate app
+
+app -> argumentProcessor: process(args)
+activate argumentProcessor
+
+argumentProcessor -> argumentValidator: validate(args)
+activate argumentValidator
+argumentProcessor <-- argumentValidator: return are arguments valid
+deactivate argumentValidator
+
+alt#Gold #LightBlue Arguments are valid
+    argumentProcessor -> passwordGenerator: generate()
+    activate passwordGenerator
+
+    passwordGenerator -> randomCharacterGenerator: generateUppercaseCharacter()
+    activate randomCharacterGenerator
+
+    randomCharacterGenerator -> passwordGenerator: return uppercase character
+    deactivate randomCharacterGenerator
+    passwordGenerator -> passwordGenerator: append character
+
+    passwordGenerator -> randomCharacterGenerator: generateLowercaseCharacter()
+    activate randomCharacterGenerator
+
+    randomCharacterGenerator -> passwordGenerator: return lowercase character
+    deactivate randomCharacterGenerator
+    passwordGenerator -> passwordGenerator: append character
+
+    passwordGenerator -> randomCharacterGenerator: generateDigitCharacter()
+    activate randomCharacterGenerator
+
+    randomCharacterGenerator -> passwordGenerator: return digit character
+    deactivate randomCharacterGenerator
+    passwordGenerator -> passwordGenerator: append character
+
+    passwordGenerator -> randomCharacterGenerator: generateSpecialCharacter()
+    activate randomCharacterGenerator
+
+    randomCharacterGenerator -> passwordGenerator: return special character
+    deactivate randomCharacterGenerator
+    passwordGenerator -> passwordGenerator: append character
+
+    loop passwordLength - 4 times
+        passwordGenerator -> randomCharacterGenerator: generateAllowedCharacter()
+        activate randomCharacterGenerator
+
+        randomCharacterGenerator -> passwordGenerator: return character
+        deactivate randomCharacterGenerator
+        passwordGenerator -> passwordGenerator: append character
+    end
+
+    passwordGenerator -> stringShuffler: shuffle(characters)
+    activate stringShuffler
+
+    stringShuffler -> passwordGenerator: return shuffled characters
+    deactivate stringShuffler
+
+    argumentProcessor <-- passwordGenerator: return generated password
+    deactivate passwordGenerator
+
+    argumentProcessor -> terminal: show(password)
+    activate terminal
+    argumentProcessor <-- terminal
+    deactivate terminal
+
+else #Pink Arguments are not valid
+    argumentProcessor -> terminal: show(usage)
+    activate terminal
+    argumentProcessor <-- terminal
+    deactivate terminal
+end
+
+app <-- argumentProcessor
+deactivate argumentProcessor
+
+@enduml
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diff --git a/diagrams/UseCase.puml b/diagrams/UseCase.puml
new file mode 100644
index 0000000..f9e1c04
--- /dev/null
+++ b/diagrams/UseCase.puml
@@ -0,0 +1,9 @@
+@startuml UseCase
+actor "User" as user
+
+rectangle demo-kotlin-cli {
+  usecase "Generate Password" as generatePassword
+}
+
+user -> generatePassword
+@enduml
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