diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index e8a81005..7c44048f 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -31,7 +31,7 @@ For project-specific context, also consult:
 
 ## Project Shape
 
-- Language: Go module `embed-code/embed-code-go`, with Go `1.26.4` declared in
+- Language: Go module `embed-code/embed-code-go`, with Go `1.27.3` declared in
   the root [`go.mod`](../go.mod) file.
 - Entry point: [`main.go`](../main.go), including mode dispatch, aggregate
   errors, version embedding from [`VERSION`](../VERSION), and final
@@ -205,7 +205,7 @@ go run ./main.go -mode=check -config-path=showcase/embedding/embed-code.yml
 ```
 
 Linting is configured by [`.golangci.yml`](../.golangci.yml) and CI uses
-`golangci-lint-action` version `v8` with `golangci-lint` version `v2.12.2`.
+`golangci-lint-action` version `v8` with `golangci-lint` version `v2.15.0`.
 Run the local equivalent only when available:
 
 ```bash
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 46beba0c..e3a1ae53 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Run linter
         uses: golangci/golangci-lint-action@v8
         with:
-          version: v2.12.2
+          version: v2.15.0
           args: ./...
 
       - name: Run Tests
diff --git a/.golangci.yml b/.golangci.yml
index ea49e152..24d0a988 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -1,7 +1,7 @@
 # This file holds the configs for the linters, and it should be placed in the current working directory.
 version: "2"
 run:
-  go: 1.22.1
+  go: 1.27.3
   modules-download-mode: readonly
   tests: true
   allow-parallel-runners: true
diff --git a/README.md b/README.md
index 21a5a97f..eebbf14c 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@ You do not need to install Go to use a release binary.
 ## Build From Source
 
 Using Embed Code does not require Go.
-To build the application from this repository, install Go `1.26.4` and run:
+To build the application from this repository, install Go `1.27.3` and run:
 
 ```bash
 go build -trimpath -o embed-code main.go
diff --git a/VERSION b/VERSION
index c813fe11..3c43790f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.2.5
+1.2.6
diff --git a/go.mod b/go.mod
index ee38cad7..ec3e8517 100644
--- a/go.mod
+++ b/go.mod
@@ -24,7 +24,7 @@
 
 module embed-code/embed-code-go
 
-go 1.26.4
+go 1.27.3
 
 require (
 	github.com/bmatcuk/doublestar/v4 v4.6.1