diff --git a/internal/setup/setup.go b/internal/setup/setup.go
index 32d81d16..e04f8eca 100644
--- a/internal/setup/setup.go
+++ b/internal/setup/setup.go
@@ -321,7 +321,7 @@ func readSlices(release *Release, baseDir, dirName string) error {
 type yamlRelease struct {
 	Format   string                 `yaml:"format"`
 	Archives map[string]yamlArchive `yaml:"archives"`
-	PubKeys  map[string]yamlPubKey  `yaml:"public-keys"`
+	PubKeys  map[string]yamlPubKey  `yaml:"v1-public-keys"`
 }
 
 const yamlReleaseFormat = "chisel-v1"
@@ -331,7 +331,7 @@ type yamlArchive struct {
 	Suites     []string `yaml:"suites"`
 	Components []string `yaml:"components"`
 	Default    bool     `yaml:"default"`
-	PubKeys    []string `yaml:"public-keys"`
+	PubKeys    []string `yaml:"v1-public-keys"`
 }
 
 type yamlPackage struct {
@@ -460,7 +460,7 @@ func parseRelease(baseDir, filePath string, data []byte) (*Release, error) {
 			release.DefaultArchive = archiveName
 		}
 		if len(details.PubKeys) == 0 {
-			return nil, fmt.Errorf("%s: archive %q missing public-keys field", fileName, archiveName)
+			return nil, fmt.Errorf("%s: archive %q missing v1-public-keys field", fileName, archiveName)
 		}
 		var archiveKeys []*packet.PublicKey
 		for _, keyName := range details.PubKeys {
diff --git a/internal/setup/setup_test.go b/internal/setup/setup_test.go
index f2f53c7a..9bbf444b 100644
--- a/internal/setup/setup_test.go
+++ b/internal/setup/setup_test.go
@@ -60,8 +60,8 @@ var setupTests = []setupTest{{
 					version: 22.04
 					components: [main, other]
 					suites: [jammy, jammy-security]
-					public-keys: [test-key]
-			public-keys:
+					v1-public-keys: [test-key]
+			v1-public-keys:
 				test-key:
 					id: ` + testKey.ID + `
 					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
@@ -774,13 +774,13 @@ var setupTests = []setupTest{{
 					components: [main, universe]
 					suites: [jammy]
 					default: true
-					public-keys: [test-key]
+					v1-public-keys: [test-key]
 				bar:
 					version: 22.04
 					components: [universe]
 					suites: [jammy-updates]
-					public-keys: [test-key]
-			public-keys:
+					v1-public-keys: [test-key]
+			v1-public-keys:
 				test-key:
 					id: ` + testKey.ID + `
 					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
@@ -827,10 +827,10 @@ var setupTests = []setupTest{{
 					version: 22.04
 					components: [main, other]
 					suites: [jammy, jammy-security]
-					public-keys: [test-key]
+					v1-public-keys: [test-key]
 					madeUpKey1: whatever
 			madeUpKey2: whatever
-			public-keys:
+			v1-public-keys:
 				test-key:
 					id: ` + testKey.ID + `
 					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
@@ -885,14 +885,14 @@ var setupTests = []setupTest{{
 					version: 22.04
 					components: [main, universe]
 					suites: [jammy]
-					public-keys: [extra-key]
+					v1-public-keys: [extra-key]
 					default: true
 				bar:
 					version: 22.04
 					components: [universe]
 					suites: [jammy-updates]
-					public-keys: [test-key, extra-key]
-			public-keys:
+					v1-public-keys: [test-key, extra-key]
+			v1-public-keys:
 				extra-key:
 					id: ` + extraTestKey.ID + `
 					armor: |` + "\n" + testutil.PrefixEachLine(extraTestKey.PubKeyArmor, "\t\t\t\t\t\t") + `
@@ -945,7 +945,7 @@ var setupTests = []setupTest{{
 					default: true
 		`,
 	},
-	relerror: `chisel.yaml: archive "foo" missing public-keys field`,
+	relerror: `chisel.yaml: archive "foo" missing v1-public-keys field`,
 }, {
 	summary: "Unknown public key",
 	input: map[string]string{
@@ -956,7 +956,7 @@ var setupTests = []setupTest{{
 					version: 22.04
 					components: [main, universe]
 					suites: [jammy]
-					public-keys: [extra-key]
+					v1-public-keys: [extra-key]
 					default: true
 		`,
 		"slices/mydir/mypkg.yaml": `
@@ -974,9 +974,9 @@ var setupTests = []setupTest{{
 					version: 22.04
 					components: [main, universe]
 					suites: [jammy]
-					public-keys: [extra-key]
+					v1-public-keys: [extra-key]
 					default: true
-			public-keys:
+			v1-public-keys:
 				extra-key:
 					id: foo
 					armor: |
@@ -1002,9 +1002,9 @@ var setupTests = []setupTest{{
 					version: 22.04
 					components: [main, universe]
 					suites: [jammy]
-					public-keys: [extra-key]
+					v1-public-keys: [extra-key]
 					default: true
-			public-keys:
+			v1-public-keys:
 				extra-key:
 					id: ` + extraTestKey.ID + `
 					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
@@ -1022,8 +1022,8 @@ var defaultChiselYaml = `
 		ubuntu:
 			version: 22.04
 			components: [main, universe]
-			public-keys: [test-key]
-	public-keys:
+			v1-public-keys: [test-key]
+	v1-public-keys:
 		test-key:
 			id: ` + testKey.ID + `
 			armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
diff --git a/internal/slicer/slicer_test.go b/internal/slicer/slicer_test.go
index 3d5df59d..48e21bf1 100644
--- a/internal/slicer/slicer_test.go
+++ b/internal/slicer/slicer_test.go
@@ -501,12 +501,12 @@ var slicerTests = []slicerTest{{
 					version: 22.04
 					components: [main, universe]
 					default: true
-					public-keys: [test-key]
+					v1-public-keys: [test-key]
 				bar:
 					version: 22.04
 					components: [main]
-					public-keys: [test-key]
-			public-keys:
+					v1-public-keys: [test-key]
+			v1-public-keys:
 				test-key:
 					id: ` + testKey.ID + `
 					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
@@ -533,8 +533,8 @@ var defaultChiselYaml = `
 		ubuntu:
 			version: 22.04
 			components: [main, universe]
-			public-keys: [test-key]
-	public-keys:
+			v1-public-keys: [test-key]
+	v1-public-keys:
 		test-key:
 			id: ` + testKey.ID + `
 			armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `