diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index faeb34f1ef..8edffc9738 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.25'
+          go-version: '1.26'
           cache: true
 
       - name: Build
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 0ba2f42694..4a25310c07 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v6
       with:
-        go-version: '1.25'
+        go-version: '1.26'
         cache: true
 
     - name: Initialize CodeQL
diff --git a/bbq/compiler/compiler.go b/bbq/compiler/compiler.go
index 8696dc5b12..722c2af3be 100644
--- a/bbq/compiler/compiler.go
+++ b/bbq/compiler/compiler.go
@@ -298,7 +298,7 @@ func (c *Compiler[E, _]) addGlobal(name string, kind bbq.GlobalKind) bbq.Global
 	case bbq.GlobalKindContract:
 		global = bbq.NewContractGlobal(c.Config.MemoryGauge, name, nil, uint16(count))
 	default:
-		panic(errors.NewDefaultUserError("unsupported global kind %#q", kind))
+		panic(errors.NewDefaultUserError("unsupported global kind %#q", kind.String()))
 	}
 
 	c.Globals[name] = global
diff --git a/bbq/global.go b/bbq/global.go
index 689d450c65..9b73a4911d 100644
--- a/bbq/global.go
+++ b/bbq/global.go
@@ -22,6 +22,8 @@ import (
 	"github.com/onflow/cadence/common"
 )
 
+//go:generate stringer -type=GlobalKind
+
 type GlobalKind int
 
 const (
diff --git a/bbq/globalkind_string.go b/bbq/globalkind_string.go
new file mode 100644
index 0000000000..c9d723c560
--- /dev/null
+++ b/bbq/globalkind_string.go
@@ -0,0 +1,26 @@
+// Code generated by "stringer -type=GlobalKind"; DO NOT EDIT.
+
+package bbq
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[GlobalKindFunction-0]
+	_ = x[GlobalKindVariable-1]
+	_ = x[GlobalKindContract-2]
+	_ = x[GlobalKindImported-3]
+}
+
+const _GlobalKind_name = "GlobalKindFunctionGlobalKindVariableGlobalKindContractGlobalKindImported"
+
+var _GlobalKind_index = [...]uint8{0, 18, 36, 54, 72}
+
+func (i GlobalKind) String() string {
+	if i < 0 || i >= GlobalKind(len(_GlobalKind_index)-1) {
+		return "GlobalKind(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _GlobalKind_name[_GlobalKind_index[i]:_GlobalKind_index[i+1]]
+}
diff --git a/go.mod b/go.mod
index c7a4c6b77c..ceb95d964e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,6 @@
 module github.com/onflow/cadence
 
-go 1.24.0
-
-toolchain go1.24.3
+go 1.26.0
 
 require (
 	github.com/SaveTheRbtz/mph v0.1.1-0.20240117162131-4166ec7869bc
diff --git a/tools/accounts-script/go.mod b/tools/accounts-script/go.mod
index ca84ab36cd..ecb75e15b1 100644
--- a/tools/accounts-script/go.mod
+++ b/tools/accounts-script/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/accounts-script
 
-go 1.24
+go 1.26
 
 require (
 	github.com/ethereum/go-ethereum v1.13.10
diff --git a/tools/compatibility-check/go.mod b/tools/compatibility-check/go.mod
index 5e0bb00ad9..0b60837ead 100644
--- a/tools/compatibility-check/go.mod
+++ b/tools/compatibility-check/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/compatibility_check
 
-go 1.25.0
+go 1.26.0
 
 require (
 	github.com/onflow/cadence v1.8.6
diff --git a/tools/constructorcheck/go.mod b/tools/constructorcheck/go.mod
index 7f09628c31..ad4f4dc947 100644
--- a/tools/constructorcheck/go.mod
+++ b/tools/constructorcheck/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/constructorcheck
 
-go 1.24
+go 1.26
 
 require golang.org/x/tools v0.32.0
 
diff --git a/tools/get-contracts/go.mod b/tools/get-contracts/go.mod
index eb7e7f93e9..7895199e37 100644
--- a/tools/get-contracts/go.mod
+++ b/tools/get-contracts/go.mod
@@ -1,3 +1,3 @@
 module github.com/onflow/cadence/tools/get-contracts
 
-go 1.24
+go 1.26
diff --git a/tools/go-apply-expr-diff/go.mod b/tools/go-apply-expr-diff/go.mod
index 63ea333d8a..94512ab660 100644
--- a/tools/go-apply-expr-diff/go.mod
+++ b/tools/go-apply-expr-diff/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/go-apply-expr-diff
 
-go 1.24
+go 1.26
 
 require (
 	github.com/dave/dst v0.27.3
diff --git a/tools/golangci-lint/go.mod b/tools/golangci-lint/go.mod
index 6a76be6171..14925f884d 100644
--- a/tools/golangci-lint/go.mod
+++ b/tools/golangci-lint/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/golangci-lint
 
-go 1.24
+go 1.26
 
 require github.com/golangci/golangci-lint/v2 v2.1.6
 
diff --git a/tools/maprange/go.mod b/tools/maprange/go.mod
index 50ecaa72d4..22b4bb526c 100644
--- a/tools/maprange/go.mod
+++ b/tools/maprange/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/maprange
 
-go 1.24
+go 1.26
 
 require golang.org/x/tools v0.32.0
 
diff --git a/tools/storage-explorer/go.mod b/tools/storage-explorer/go.mod
index 03f9bd4300..19aad65e4d 100644
--- a/tools/storage-explorer/go.mod
+++ b/tools/storage-explorer/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/storage-explorer
 
-go 1.23
+go 1.26
 
 require (
 	github.com/gorilla/mux v1.8.1
diff --git a/tools/unkeyed/go.mod b/tools/unkeyed/go.mod
index 0fb5b76b4a..0a4310f7e9 100644
--- a/tools/unkeyed/go.mod
+++ b/tools/unkeyed/go.mod
@@ -1,6 +1,6 @@
 module github.com/onflow/cadence/tools/unkeyed
 
-go 1.24
+go 1.26
 
 require (
 	golang.org/x/exp/typeparams v0.0.0-20250210185358-939b2ce775ac