diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index eed46838962..10f17a2fcbf 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -23,7 +23,7 @@ Please avoid:
 ## Building the project
 
 Prerequisites:
-- Go 1.19+
+- Go 1.21+
 
 Build with:
 * Unix-like systems: `make`
diff --git a/.github/workflows/deployment.yml b/.github/workflows/deployment.yml
index 3974737aae7..b15b23806f8 100644
--- a/.github/workflows/deployment.yml
+++ b/.github/workflows/deployment.yml
@@ -1,6 +1,6 @@
 name: Deployment
 
-concurrency: 
+concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name }}
   cancel-in-progress: true
 
@@ -17,7 +17,7 @@ on:
         default: production
         type: environment
       go_version:
-        default: "1.19"
+        default: "1.21"
         type: string
       platforms:
         default: "linux,macos,windows"
@@ -61,7 +61,7 @@ jobs:
             dist/*.tar.gz
             dist/*.rpm
             dist/*.deb
-  
+
   macos:
     runs-on: macos-latest
     environment: ${{ inputs.environment }}
@@ -118,7 +118,7 @@ jobs:
           path: |
             dist/*.tar.gz
             dist/*.zip
-  
+
   windows:
     runs-on: windows-latest
     environment: ${{ inputs.environment }}
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 1a3a3331885..a375e2d8fec 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -13,10 +13,10 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - name: Set up Go 1.19
+      - name: Set up Go 1.21
         uses: actions/setup-go@v4
         with:
-          go-version: 1.19
+          go-version: 1.21
 
       - name: Check out code
         uses: actions/checkout@v3
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index dd1fede0dec..c8defbf3a3b 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -19,10 +19,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Set up Go 1.19
+      - name: Set up Go 1.21
         uses: actions/setup-go@v4
         with:
-          go-version: 1.19
+          go-version: 1.21
 
       - name: Check out code
         uses: actions/checkout@v3
@@ -40,7 +40,7 @@ jobs:
           go mod verify
           go mod download
 
-          LINT_VERSION=1.50.1
+          LINT_VERSION=1.54.1
           curl -fsSL https://github.com/golangci/golangci-lint/releases/download/v${LINT_VERSION}/golangci-lint-${LINT_VERSION}-linux-amd64.tar.gz | \
             tar xz --strip-components 1 --wildcards \*/golangci-lint
           mkdir -p bin && mv golangci-lint bin/
diff --git a/docs/source.md b/docs/source.md
index 9034e9de599..cc1605b8cbf 100644
--- a/docs/source.md
+++ b/docs/source.md
@@ -1,6 +1,6 @@
 # Installation from source
 
-1. Verify that you have Go 1.19+ installed
+1. Verify that you have Go 1.21+ installed
 
    ```sh
    $ go version
diff --git a/go.mod b/go.mod
index 2602fc49603..48632a1e3e7 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cli/cli/v2
 
-go 1.19
+go 1.21
 
 require (
 	github.com/AlecAivazis/survey/v2 v2.3.7
diff --git a/go.sum b/go.sum
index 47e5159ae0a..14af85480e3 100644
--- a/go.sum
+++ b/go.sum
@@ -91,6 +91,7 @@ github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwA
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
@@ -182,6 +183,7 @@ golang.org/x/net v0.0.0-20220923203811-8be639271d50/go.mod h1:YDH+HFinaLZZlnHAfS
 golang.org/x/net v0.9.0 h1:aWJ/m6xSmxWBx+V0XRHTlrYrPG56jKsLdTFmsSsCzOM=
 golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
 golang.org/x/oauth2 v0.4.0 h1:NF0gk8LVPg1Ml7SSbGyySuoxdsXitj7TvgvuRxIMc/M=
+golang.org/x/oauth2 v0.4.0/go.mod h1:RznEsdpjGAINPTOF0UH/t+xJ75L18YO3Ho6Pyn+uRec=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -221,11 +223,13 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=
+google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f h1:BWUVssLB0HVOSY78gIdvk1dTVYtT1y8SBWtPYuTJ/6w=
 google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f/go.mod h1:RGgjbofJ8xD9Sq1VVhDM1Vok1vRONV+rg+CjzG4SZKM=
 google.golang.org/grpc v1.53.0 h1:LAv2ds7cmFV/XTS3XG1NneeENYrXGmorPxsBbptIjNc=
diff --git a/internal/codespaces/api/api_test.go b/internal/codespaces/api/api_test.go
index 75f82c39ed3..65852cc7914 100644
--- a/internal/codespaces/api/api_test.go
+++ b/internal/codespaces/api/api_test.go
@@ -136,6 +136,7 @@ func createHttpClient() (*http.Client, error) {
 
 func TestNew_APIURL_dotcomConfig(t *testing.T) {
 	t.Setenv("GITHUB_API_URL", "")
+	t.Setenv("GITHUB_SERVER_URL", "https://github.com")
 	cfg := &config.ConfigMock{
 		AuthenticationFunc: func() *config.AuthConfig {
 			return &config.AuthConfig{}
@@ -158,6 +159,7 @@ func TestNew_APIURL_dotcomConfig(t *testing.T) {
 
 func TestNew_APIURL_customConfig(t *testing.T) {
 	t.Setenv("GITHUB_API_URL", "")
+	t.Setenv("GITHUB_SERVER_URL", "https://github.mycompany.com")
 	cfg := &config.ConfigMock{
 		AuthenticationFunc: func() *config.AuthConfig {
 			authCfg := &config.AuthConfig{}
@@ -182,6 +184,7 @@ func TestNew_APIURL_customConfig(t *testing.T) {
 
 func TestNew_APIURL_env(t *testing.T) {
 	t.Setenv("GITHUB_API_URL", "https://api.mycompany.com")
+	t.Setenv("GITHUB_SERVER_URL", "https://mycompany.com")
 	cfg := &config.ConfigMock{
 		AuthenticationFunc: func() *config.AuthConfig {
 			return &config.AuthConfig{}
@@ -218,6 +221,7 @@ func TestNew_APIURL_dotcomFallback(t *testing.T) {
 
 func TestNew_ServerURL_dotcomConfig(t *testing.T) {
 	t.Setenv("GITHUB_SERVER_URL", "")
+	t.Setenv("GITHUB_API_URL", "https://api.github.com")
 	cfg := &config.ConfigMock{
 		AuthenticationFunc: func() *config.AuthConfig {
 			return &config.AuthConfig{}
@@ -240,6 +244,7 @@ func TestNew_ServerURL_dotcomConfig(t *testing.T) {
 
 func TestNew_ServerURL_customConfig(t *testing.T) {
 	t.Setenv("GITHUB_SERVER_URL", "")
+	t.Setenv("GITHUB_API_URL", "https://github.mycompany.com/api/v3")
 	cfg := &config.ConfigMock{
 		AuthenticationFunc: func() *config.AuthConfig {
 			authCfg := &config.AuthConfig{}
@@ -264,6 +269,7 @@ func TestNew_ServerURL_customConfig(t *testing.T) {
 
 func TestNew_ServerURL_env(t *testing.T) {
 	t.Setenv("GITHUB_SERVER_URL", "https://mycompany.com")
+	t.Setenv("GITHUB_API_URL", "https://api.mycompany.com")
 	cfg := &config.ConfigMock{
 		AuthenticationFunc: func() *config.AuthConfig {
 			return &config.AuthConfig{}
diff --git a/pkg/cmd/label/create.go b/pkg/cmd/label/create.go
index f9c63f6e682..0a88fbcab5d 100644
--- a/pkg/cmd/label/create.go
+++ b/pkg/cmd/label/create.go
@@ -102,8 +102,8 @@ func createRun(opts *createOptions) error {
 	}
 
 	if opts.Color == "" {
-		rand.Seed(time.Now().UnixNano())
-		opts.Color = randomColors[rand.Intn(len(randomColors)-1)]
+		r := rand.New(rand.NewSource(time.Now().UnixNano()))
+		opts.Color = randomColors[r.Intn(len(randomColors)-1)]
 	}
 
 	opts.IO.StartProgressIndicator()
diff --git a/pkg/cmd/repo/credits/credits.go b/pkg/cmd/repo/credits/credits.go
index 37390bcb194..4b7b9fb289f 100644
--- a/pkg/cmd/repo/credits/credits.go
+++ b/pkg/cmd/repo/credits/credits.go
@@ -178,7 +178,7 @@ func creditsRun(opts *CreditsOptions) error {
 		return nil
 	}
 
-	rand.Seed(time.Now().UnixNano())
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 
 	lines := []string{}
 
@@ -199,13 +199,13 @@ func creditsRun(opts *CreditsOptions) error {
 
 	starLinesLeft := []string{}
 	for x := 0; x < len(lines); x++ {
-		starLinesLeft = append(starLinesLeft, starLine(margin))
+		starLinesLeft = append(starLinesLeft, starLine(r, margin))
 	}
 
 	starLinesRight := []string{}
 	for x := 0; x < len(lines); x++ {
 		lineWidth := termWidth - (margin + len(lines[x]))
-		starLinesRight = append(starLinesRight, starLine(lineWidth))
+		starLinesRight = append(starLinesRight, starLine(r, lineWidth))
 	}
 
 	loop := true
@@ -245,13 +245,13 @@ func creditsRun(opts *CreditsOptions) error {
 	return nil
 }
 
-func starLine(width int) string {
+func starLine(r *rand.Rand, width int) string {
 	line := ""
 	starChance := 0.1
 	for y := 0; y < width; y++ {
-		chance := rand.Float64()
+		chance := r.Float64()
 		if chance <= starChance {
-			charRoll := rand.Float64()
+			charRoll := r.Float64()
 			switch {
 			case charRoll < 0.3:
 				line += "."
diff --git a/pkg/cmd/repo/garden/garden.go b/pkg/cmd/repo/garden/garden.go
index c9c59d420f7..840d5adca8f 100644
--- a/pkg/cmd/repo/garden/garden.go
+++ b/pkg/cmd/repo/garden/garden.go
@@ -169,7 +169,7 @@ func gardenRun(opts *GardenOptions) error {
 	}
 
 	seed := computeSeed(ghrepo.FullName(toView))
-	rand.Seed(seed)
+	r := rand.New(rand.NewSource(seed))
 
 	termWidth, termHeight, err := utils.TerminalSize(out)
 	if err != nil {
@@ -198,7 +198,7 @@ func gardenRun(opts *GardenOptions) error {
 	}
 	player := &Player{0, 0, cs.Bold("@"), geo, 0}
 
-	garden := plantGarden(commits, geo)
+	garden := plantGarden(r, commits, geo)
 	if len(garden) < geo.Height {
 		geo.Height = len(garden)
 	}
@@ -334,11 +334,11 @@ func isQuit(b []byte) bool {
 	return rune(b[0]) == 'q' || bytes.Equal(b, ctrlC)
 }
 
-func plantGarden(commits []*Commit, geo *Geometry) [][]*Cell {
+func plantGarden(r *rand.Rand, commits []*Commit, geo *Geometry) [][]*Cell {
 	cellIx := 0
 	grassCell := &Cell{RGB(0, 200, 0, ","), "You're standing on a patch of grass in a field of wildflowers."}
 	garden := [][]*Cell{}
-	streamIx := rand.Intn(geo.Width - 1)
+	streamIx := r.Intn(geo.Width - 1)
 	if streamIx == geo.Width/2 {
 		streamIx--
 	}
@@ -363,7 +363,7 @@ func plantGarden(commits []*Commit, geo *Geometry) [][]*Cell {
 				})
 				tint += 15
 				streamIx--
-				if rand.Float64() < 0.5 {
+				if r.Float64() < 0.5 {
 					streamIx++
 				}
 				if streamIx < 0 {
@@ -393,7 +393,7 @@ func plantGarden(commits []*Commit, geo *Geometry) [][]*Cell {
 				continue
 			}
 
-			chance := rand.Float64()
+			chance := r.Float64()
 			if chance <= geo.Density {
 				commit := commits[cellIx]
 				garden[y] = append(garden[y], &Cell{