diff --git a/etc/schemas/arduino-boards-txt-definitions-schema.json b/etc/schemas/arduino-boards-txt-definitions-schema.json
index 86c0567d..0468b254 100644
--- a/etc/schemas/arduino-boards-txt-definitions-schema.json
+++ b/etc/schemas/arduino-boards-txt-definitions-schema.json
@@ -855,7 +855,7 @@
                 "type": "string"
               },
               {
-                "pattern": "^[0-9]+$"
+                "pattern": "^([0-9]+)|({.+})$"
               }
             ]
           }
@@ -896,7 +896,7 @@
                 "type": "string"
               },
               {
-                "pattern": "^[0-9]+$"
+                "pattern": "^([0-9]+)|({.+})$"
               }
             ]
           }
@@ -1098,7 +1098,7 @@
                 "type": "string"
               },
               {
-                "pattern": "^0[xX][0-9a-fA-F]{4}$"
+                "pattern": "^(0[xX][0-9a-fA-F]{4})|({.+})$"
               }
             ]
           }
diff --git a/etc/schemas/arduino-platform-txt-definitions-schema.json b/etc/schemas/arduino-platform-txt-definitions-schema.json
index 177fd2f4..1bc8bdd2 100644
--- a/etc/schemas/arduino-platform-txt-definitions-schema.json
+++ b/etc/schemas/arduino-platform-txt-definitions-schema.json
@@ -62,7 +62,14 @@
                 "$ref": "#/definitions/propertiesObjects/version/base/object"
               },
               {
-                "$ref": "general-definitions-schema.json#/definitions/patternObjects/relaxedSemver"
+                "anyOf": [
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/relaxedSemver"
+                  },
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/containsPropertyReference"
+                  }
+                ]
               }
             ]
           }
@@ -74,7 +81,14 @@
                 "$ref": "#/definitions/propertiesObjects/version/base/object"
               },
               {
-                "$ref": "general-definitions-schema.json#/definitions/patternObjects/semver"
+                "anyOf": [
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/semver"
+                  },
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/containsPropertyReference"
+                  }
+                ]
               }
             ]
           }
diff --git a/etc/schemas/general-definitions-schema.json b/etc/schemas/general-definitions-schema.json
index 513aff82..983972ab 100644
--- a/etc/schemas/general-definitions-schema.json
+++ b/etc/schemas/general-definitions-schema.json
@@ -13,6 +13,10 @@
       "relaxedSemver": {
         "$comment": "https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string adjusted to also allow MAJOR.MINOR, MAJOR, and with unused non-capturing group syntax removed. For details, see https://go.bug.st/relaxed-semver",
         "pattern": "^(0|[1-9]\\d*)(\\.(0|[1-9]\\d*))?(\\.(0|[1-9]\\d*))?(-((0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(\\.(0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(\\+([0-9a-zA-Z-]+(\\.[0-9a-zA-Z-]+)*))?$"
+      },
+      "containsPropertyReference": {
+        "$comment": "https://arduino.github.io/arduino-cli/dev/platform-specification/#configuration-files-format",
+        "pattern": "{.+}"
       }
     }
   }
diff --git a/internal/project/platform/boardstxt/boardstxtschema_test.go b/internal/project/platform/boardstxt/boardstxtschema_test.go
index 860e3d50..f92bd5cc 100644
--- a/internal/project/platform/boardstxt/boardstxtschema_test.go
+++ b/internal/project/platform/boardstxt/boardstxtschema_test.go
@@ -281,6 +281,9 @@ func TestPattern(t *testing.T) {
 		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "123", compliancelevel.Permissive, assert.False},
 		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "123", compliancelevel.Specification, assert.False},
 		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "123", compliancelevel.Strict, assert.False},
+		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "foo", compliancelevel.Specification, assert.True},
 		{"nano.upload.maximum_size", "nano/upload\\.maximum_size", "foo", compliancelevel.Strict, assert.True},
@@ -288,6 +291,9 @@ func TestPattern(t *testing.T) {
 		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "123", compliancelevel.Permissive, assert.False},
 		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "123", compliancelevel.Specification, assert.False},
 		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "123", compliancelevel.Strict, assert.False},
+		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "foo", compliancelevel.Specification, assert.True},
 		{"nano.menu.bar.baz.upload.maximum_size", "nano/menu/bar/baz/upload\\.maximum_size", "foo", compliancelevel.Strict, assert.True},
@@ -295,6 +301,9 @@ func TestPattern(t *testing.T) {
 		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "123", compliancelevel.Permissive, assert.False},
 		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "123", compliancelevel.Specification, assert.False},
 		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "123", compliancelevel.Strict, assert.False},
+		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "foo", compliancelevel.Specification, assert.True},
 		{"nano.upload.maximum_data_size", "nano/upload\\.maximum_data_size", "foo", compliancelevel.Strict, assert.True},
@@ -302,6 +311,9 @@ func TestPattern(t *testing.T) {
 		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "123", compliancelevel.Permissive, assert.False},
 		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "123", compliancelevel.Specification, assert.False},
 		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "123", compliancelevel.Strict, assert.False},
+		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "foo", compliancelevel.Specification, assert.True},
 		{"nano.menu.bar.baz.upload.maximum_data_size", "nano/menu/bar/baz/upload\\.maximum_data_size", "foo", compliancelevel.Strict, assert.True},
@@ -309,6 +321,9 @@ func TestPattern(t *testing.T) {
 		{"nano.vid.0", "nano/vid\\.0", "0xABCD", compliancelevel.Permissive, assert.False},
 		{"nano.vid.0", "nano/vid\\.0", "0xABCD", compliancelevel.Specification, assert.False},
 		{"nano.vid.0", "nano/vid\\.0", "0xABCD", compliancelevel.Strict, assert.False},
+		{"nano.vid.0", "nano/vid\\.0", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.vid.0", "nano/vid\\.0", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.vid.0", "nano/vid\\.0", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.vid.0", "nano/vid\\.0", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.vid.0", "nano/vid\\.0", "foo", compliancelevel.Specification, assert.True},
 		{"nano.vid.0", "nano/vid\\.0", "foo", compliancelevel.Strict, assert.True},
@@ -316,6 +331,9 @@ func TestPattern(t *testing.T) {
 		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "0xABCD", compliancelevel.Permissive, assert.False},
 		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "0xABCD", compliancelevel.Specification, assert.False},
 		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "0xABCD", compliancelevel.Strict, assert.False},
+		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "foo", compliancelevel.Specification, assert.True},
 		{"nano.menu.bar.baz.vid.0", "nano/menu/bar/baz/vid\\.0", "foo", compliancelevel.Strict, assert.True},
@@ -323,6 +341,9 @@ func TestPattern(t *testing.T) {
 		{"nano.pid.0", "nano/pid\\.0", "0xABCD", compliancelevel.Permissive, assert.False},
 		{"nano.pid.0", "nano/pid\\.0", "0xABCD", compliancelevel.Specification, assert.False},
 		{"nano.pid.0", "nano/pid\\.0", "0xABCD", compliancelevel.Strict, assert.False},
+		{"nano.pid.0", "nano/pid\\.0", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.pid.0", "nano/pid\\.0", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.pid.0", "nano/pid\\.0", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.pid.0", "nano/pid\\.0", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.pid.0", "nano/pid\\.0", "foo", compliancelevel.Specification, assert.True},
 		{"nano.pid.0", "nano/pid\\.0", "foo", compliancelevel.Strict, assert.True},
@@ -330,6 +351,9 @@ func TestPattern(t *testing.T) {
 		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "0xABCD", compliancelevel.Permissive, assert.False},
 		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "0xABCD", compliancelevel.Specification, assert.False},
 		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "0xABCD", compliancelevel.Strict, assert.False},
+		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "{foo}", compliancelevel.Permissive, assert.False},
+		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "{foo}", compliancelevel.Specification, assert.False},
+		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "{foo}", compliancelevel.Strict, assert.False},
 		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "foo", compliancelevel.Permissive, assert.True},
 		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "foo", compliancelevel.Specification, assert.True},
 		{"nano.menu.bar.baz.pid.0", "nano/menu/bar/baz/pid\\.0", "foo", compliancelevel.Strict, assert.True},
diff --git a/internal/project/platform/platformtxt/platformtxtschema_test.go b/internal/project/platform/platformtxt/platformtxtschema_test.go
index c04ca6f1..03c8c96f 100644
--- a/internal/project/platform/platformtxt/platformtxtschema_test.go
+++ b/internal/project/platform/platformtxt/platformtxtschema_test.go
@@ -329,6 +329,19 @@ func TestPattern(t *testing.T) {
 		complianceLevel             compliancelevel.Type
 		assertion                   assert.BoolAssertionFunc
 	}{
+		{"version", "version", "1.0.0", compliancelevel.Permissive, assert.False},
+		{"version", "version", "1.0.0", compliancelevel.Specification, assert.False},
+		{"version", "version", "1.0.0", compliancelevel.Strict, assert.False},
+		{"version", "version", "1.0", compliancelevel.Permissive, assert.False},
+		{"version", "version", "1.0", compliancelevel.Specification, assert.True},
+		{"version", "version", "1.0", compliancelevel.Strict, assert.True},
+		{"version", "version", "{foo}", compliancelevel.Permissive, assert.False},
+		{"version", "version", "{foo}", compliancelevel.Specification, assert.False},
+		{"version", "version", "{foo}", compliancelevel.Strict, assert.False},
+		{"version", "version", "foo", compliancelevel.Permissive, assert.True},
+		{"version", "version", "foo", compliancelevel.Specification, assert.True},
+		{"version", "version", "foo", compliancelevel.Strict, assert.True},
+
 		{"recipe.c.o.pattern", "recipe\\.c\\.o\\.pattern", "foo {compiler.c.extra_flags} bar", compliancelevel.Permissive, assert.False},
 		{"recipe.c.o.pattern", "recipe\\.c\\.o\\.pattern", "foo {compiler.c.extra_flags} bar", compliancelevel.Specification, assert.False},
 		{"recipe.c.o.pattern", "recipe\\.c\\.o\\.pattern", "foo {compiler.c.extra_flags} bar", compliancelevel.Strict, assert.False},
diff --git a/internal/rule/schema/schemadata/bindata.go b/internal/rule/schema/schemadata/bindata.go
index 9ae12045..b80e766a 100644
--- a/internal/rule/schema/schemadata/bindata.go
+++ b/internal/rule/schema/schemadata/bindata.go
@@ -927,7 +927,7 @@ var _arduinoBoardsTxtDefinitionsSchemaJson = []byte(`{
                 "type": "string"
               },
               {
-                "pattern": "^[0-9]+$"
+                "pattern": "^([0-9]+)|({.+})$"
               }
             ]
           }
@@ -968,7 +968,7 @@ var _arduinoBoardsTxtDefinitionsSchemaJson = []byte(`{
                 "type": "string"
               },
               {
-                "pattern": "^[0-9]+$"
+                "pattern": "^([0-9]+)|({.+})$"
               }
             ]
           }
@@ -1170,7 +1170,7 @@ var _arduinoBoardsTxtDefinitionsSchemaJson = []byte(`{
                 "type": "string"
               },
               {
-                "pattern": "^0[xX][0-9a-fA-F]{4}$"
+                "pattern": "^(0[xX][0-9a-fA-F]{4})|({.+})$"
               }
             ]
           }
@@ -2603,7 +2603,14 @@ var _arduinoPlatformTxtDefinitionsSchemaJson = []byte(`{
                 "$ref": "#/definitions/propertiesObjects/version/base/object"
               },
               {
-                "$ref": "general-definitions-schema.json#/definitions/patternObjects/relaxedSemver"
+                "anyOf": [
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/relaxedSemver"
+                  },
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/containsPropertyReference"
+                  }
+                ]
               }
             ]
           }
@@ -2615,7 +2622,14 @@ var _arduinoPlatformTxtDefinitionsSchemaJson = []byte(`{
                 "$ref": "#/definitions/propertiesObjects/version/base/object"
               },
               {
-                "$ref": "general-definitions-schema.json#/definitions/patternObjects/semver"
+                "anyOf": [
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/semver"
+                  },
+                  {
+                    "$ref": "general-definitions-schema.json#/definitions/patternObjects/containsPropertyReference"
+                  }
+                ]
               }
             ]
           }
@@ -4356,6 +4370,10 @@ var _generalDefinitionsSchemaJson = []byte(`{
       "relaxedSemver": {
         "$comment": "https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string adjusted to also allow MAJOR.MINOR, MAJOR, and with unused non-capturing group syntax removed. For details, see https://go.bug.st/relaxed-semver",
         "pattern": "^(0|[1-9]\\d*)(\\.(0|[1-9]\\d*))?(\\.(0|[1-9]\\d*))?(-((0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(\\.(0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(\\+([0-9a-zA-Z-]+(\\.[0-9a-zA-Z-]+)*))?$"
+      },
+      "containsPropertyReference": {
+        "$comment": "https://arduino.github.io/arduino-cli/dev/platform-specification/#configuration-files-format",
+        "pattern": "{.+}"
       }
     }
   }