diff --git a/.golangci.next.reference.yml b/.golangci.next.reference.yml
index 144550b4b25d..0e9eb6276c52 100644
--- a/.golangci.next.reference.yml
+++ b/.golangci.next.reference.yml
@@ -2722,11 +2722,16 @@ linters:
       # https://github.com/go-simpler/sloglint?tab=readme-ov-file#static-messages
       # Default: false
       static-msg: true
+      # Enforce message style.
+      # Values: lowercased, capitalized
+      # https://github.com/go-simpler/sloglint?tab=readme-ov-file#message-style
+      # Default: ""
+      msg-style: capitalized
       # Enforce using constants instead of raw keys.
       # https://github.com/go-simpler/sloglint?tab=readme-ov-file#no-raw-keys
       # Default: false
       no-raw-keys: true
-      # Enforce a single key naming convention.
+      # Enforce key naming convention.
       # Values: snake, kebab, camel, pascal
       # https://github.com/go-simpler/sloglint?tab=readme-ov-file#key-naming-convention
       # Default: ""
diff --git a/go.mod b/go.mod
index 362c61861eed..abf1aef756d0 100644
--- a/go.mod
+++ b/go.mod
@@ -125,7 +125,7 @@ require (
 	github.com/ykadowak/zerologlint v0.1.5
 	gitlab.com/bosi/decorder v0.4.2
 	go-simpler.org/musttag v0.13.0
-	go-simpler.org/sloglint v0.9.0
+	go-simpler.org/sloglint v0.10.0
 	go.uber.org/automaxprocs v1.6.0
 	golang.org/x/mod v0.24.0
 	golang.org/x/sys v0.31.0
diff --git a/go.sum b/go.sum
index 68b4c3401cc7..564186f8d411 100644
--- a/go.sum
+++ b/go.sum
@@ -626,8 +626,8 @@ go-simpler.org/assert v0.9.0 h1:PfpmcSvL7yAnWyChSjOz6Sp6m9j5lyK8Ok9pEL31YkQ=
 go-simpler.org/assert v0.9.0/go.mod h1:74Eqh5eI6vCK6Y5l3PI8ZYFXG4Sa+tkr70OIPJAUr28=
 go-simpler.org/musttag v0.13.0 h1:Q/YAW0AHvaoaIbsPj3bvEI5/QFP7w696IMUpnKXQfCE=
 go-simpler.org/musttag v0.13.0/go.mod h1:FTzIGeK6OkKlUDVpj0iQUXZLUO1Js9+mvykDQy9C5yM=
-go-simpler.org/sloglint v0.9.0 h1:/40NQtjRx9txvsB/RN022KsUJU+zaaSb/9q9BSefSrE=
-go-simpler.org/sloglint v0.9.0/go.mod h1:G/OrAF6uxj48sHahCzrbarVMptL2kjWTaUeC8+fOGww=
+go-simpler.org/sloglint v0.10.0 h1:wrW6kIuFLDZ7rW0tKRmUX5uklauXNo5+HKwjwmeNVvg=
+go-simpler.org/sloglint v0.10.0/go.mod h1:CFDO8R1i77dlciGfPEPvYke2ZMx4eyGiEIWkyeW2Pvw=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
diff --git a/jsonschema/golangci.next.jsonschema.json b/jsonschema/golangci.next.jsonschema.json
index dedbf8676bb2..1a056b9c4fcb 100644
--- a/jsonschema/golangci.next.jsonschema.json
+++ b/jsonschema/golangci.next.jsonschema.json
@@ -2962,6 +2962,11 @@
               "type": "boolean",
               "default": false
             },
+            "msg-style": {
+              "description": "Enforce message style.",
+              "enum": ["", "lowercased", "capitalized"],
+              "default": false
+            },
             "key-naming-case": {
               "description": "Enforce a single key naming convention.",
               "enum": ["snake", "kebab", "camel", "pascal"]
diff --git a/pkg/config/linters_settings.go b/pkg/config/linters_settings.go
index 45109fe4b088..046645e40f98 100644
--- a/pkg/config/linters_settings.go
+++ b/pkg/config/linters_settings.go
@@ -784,6 +784,7 @@ type SlogLintSettings struct {
 	NoGlobal       string   `mapstructure:"no-global"`
 	Context        string   `mapstructure:"context"`
 	StaticMsg      bool     `mapstructure:"static-msg"`
+	MsgStyle       string   `mapstructure:"msg-style"`
 	NoRawKeys      bool     `mapstructure:"no-raw-keys"`
 	KeyNamingCase  string   `mapstructure:"key-naming-case"`
 	ForbiddenKeys  []string `mapstructure:"forbidden-keys"`
diff --git a/pkg/golinters/sloglint/sloglint.go b/pkg/golinters/sloglint/sloglint.go
index 01e75e44ab48..021157dd66b7 100644
--- a/pkg/golinters/sloglint/sloglint.go
+++ b/pkg/golinters/sloglint/sloglint.go
@@ -18,6 +18,7 @@ func New(settings *config.SlogLintSettings) *goanalysis.Linter {
 			NoGlobal:       settings.NoGlobal,
 			ContextOnly:    settings.Context,
 			StaticMsg:      settings.StaticMsg,
+			MsgStyle:       settings.MsgStyle,
 			NoRawKeys:      settings.NoRawKeys,
 			KeyNamingCase:  settings.KeyNamingCase,
 			ForbiddenKeys:  settings.ForbiddenKeys,