diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..e404f35
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,22 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+- `Added` for new features.
+- `Changed` for changes in existing functionality.
+- `Deprecated` for soon-to-be removed features.
+- `Removed` for now removed features.
+- `Fixed` for any bug fixes.
+- `Security` in case of vulnerabilities.
+
+## [Unreleased]
+
+### Added
+- Added support for slice flags. Added by @zkep in [PR](https://github.com/leaanthony/clir/pull/23)
+
+### Fixed
+
+### Changed
\ No newline at end of file
diff --git a/command.go b/command.go
index b25fb17..d909f5a 100644
--- a/command.go
+++ b/command.go
@@ -351,7 +351,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.Atoi(defaultValue)
 				if err != nil {
-					panic("Invalid default value for int flag")
+					panic("Invalid default value for int64 flag")
 				}
 				field.SetInt(int64(value))
 			}
@@ -361,7 +361,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.Atoi(defaultValue)
 				if err != nil {
-					panic("Invalid default value for int flag")
+					panic("Invalid default value for uint flag")
 				}
 				field.SetUint(uint64(value))
 			}
@@ -371,7 +371,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.Atoi(defaultValue)
 				if err != nil {
-					panic("Invalid default value for int flag")
+					panic("Invalid default value for uint8 flag")
 				}
 				field.SetUint(uint64(value))
 			}
@@ -381,7 +381,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.Atoi(defaultValue)
 				if err != nil {
-					panic("Invalid default value for int flag")
+					panic("Invalid default value for uint16 flag")
 				}
 				field.SetUint(uint64(value))
 			}
@@ -391,7 +391,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.Atoi(defaultValue)
 				if err != nil {
-					panic("Invalid default value for int flag")
+					panic("Invalid default value for uint32 flag")
 				}
 				field.SetUint(uint64(value))
 			}
@@ -401,7 +401,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.Atoi(defaultValue)
 				if err != nil {
-					panic("Invalid default value for int flag")
+					panic("Invalid default value for uint64 flag")
 				}
 				field.SetUint(uint64(value))
 			}
@@ -411,7 +411,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.ParseFloat(defaultValue, 64)
 				if err != nil {
-					panic("Invalid default value for float flag")
+					panic("Invalid default value for float32 flag")
 				}
 				field.SetFloat(value)
 			}
@@ -421,7 +421,7 @@ func (c *Command) AddFlags(optionStruct interface{}) *Command {
 				// set value of field to default value
 				value, err := strconv.ParseFloat(defaultValue, 64)
 				if err != nil {
-					panic("Invalid default value for float flag")
+					panic("Invalid default value for float64 flag")
 				}
 				field.SetFloat(value)
 			}