diff --git a/aptos-move/aptos-e2e-comparison-testing/src/execution.rs b/aptos-move/aptos-e2e-comparison-testing/src/execution.rs
index 4a803878916de..dcdaae42872b2 100644
--- a/aptos-move/aptos-e2e-comparison-testing/src/execution.rs
+++ b/aptos-move/aptos-e2e-comparison-testing/src/execution.rs
@@ -221,8 +221,11 @@ impl Execution {
             if compiled_cache.failed_packages_v2.contains(&package_info) {
                 v2_failed = true;
             } else {
-                let compiled_res_v2 =
-                    compile_package(package_dir, &package_info, Some(CompilerVersion::V2_0));
+                let compiled_res_v2 = compile_package(
+                    package_dir,
+                    &package_info,
+                    Some(CompilerVersion::latest_stable()),
+                );
                 if let Ok(compiled_res) = compiled_res_v2 {
                     generate_compiled_blob(
                         &package_info,
diff --git a/aptos-move/aptos-e2e-comparison-testing/src/lib.rs b/aptos-move/aptos-e2e-comparison-testing/src/lib.rs
index 83dbfb1af3613..ecea1b0793ba1 100644
--- a/aptos-move/aptos-e2e-comparison-testing/src/lib.rs
+++ b/aptos-move/aptos-e2e-comparison-testing/src/lib.rs
@@ -410,7 +410,7 @@ fn compile_aptos_packages(
     for package in APTOS_PACKAGES {
         let root_package_dir = aptos_commons_path.join(get_aptos_dir(package).unwrap());
         let compiler_version = if v2_flag {
-            Some(CompilerVersion::V2_0)
+            Some(CompilerVersion::latest_stable())
         } else {
             Some(CompilerVersion::V1)
         };
@@ -575,8 +575,11 @@ fn dump_and_compile_from_package_metadata(
             return Err(anyhow::Error::msg("compilation failed at v1"));
         }
         if execution_mode.is_some_and(|mode| mode.is_v2_or_compare()) {
-            let package_v2 =
-                compile_package(root_package_dir, &package_info, Some(CompilerVersion::V2_0));
+            let package_v2 = compile_package(
+                root_package_dir,
+                &package_info,
+                Some(CompilerVersion::latest_stable()),
+            );
             if let Ok(built_package) = package_v2 {
                 generate_compiled_blob(
                     &package_info,
diff --git a/aptos-move/e2e-move-tests/src/lib.rs b/aptos-move/e2e-move-tests/src/lib.rs
index 7d1f6343ceb2d..1b2bc1bc6a5fe 100644
--- a/aptos-move/e2e-move-tests/src/lib.rs
+++ b/aptos-move/e2e-move-tests/src/lib.rs
@@ -47,7 +47,7 @@ pub(crate) fn build_package(
 ) -> anyhow::Result<BuiltPackage> {
     let mut options = options;
     if get_move_compiler_v2_from_env() {
-        options.compiler_version = Some(CompilerVersion::V2_0);
+        options.compiler_version = Some(CompilerVersion::latest_stable());
     }
     BuiltPackage::build(package_path.to_owned(), options)
 }
diff --git a/aptos-move/framework/src/built_package.rs b/aptos-move/framework/src/built_package.rs
index 77c5bf7cd813d..1a7d5edfb3d9f 100644
--- a/aptos-move/framework/src/built_package.rs
+++ b/aptos-move/framework/src/built_package.rs
@@ -22,7 +22,10 @@ use move_compiler::compiled_unit::{CompiledUnit, NamedCompiledModule};
 use move_compiler_v2::{external_checks::ExternalChecks, options::Options, Experiment};
 use move_core_types::{language_storage::ModuleId, metadata::Metadata};
 use move_model::{
-    metadata::{CompilerVersion, LanguageVersion},
+    metadata::{
+        CompilerVersion, LanguageVersion, LATEST_STABLE_COMPILER_VERSION,
+        LATEST_STABLE_LANGUAGE_VERSION,
+    },
     model::GlobalEnv,
 };
 use move_package::{
@@ -88,10 +91,10 @@ pub struct BuildOptions {
     #[clap(long, default_value_if("move_2", "true", "7"))]
     pub bytecode_version: Option<u32>,
     #[clap(long, value_parser = clap::value_parser!(CompilerVersion),
-           default_value_if("move_2", "true", "2.0"))]
+           default_value_if("move_2", "true", LATEST_STABLE_COMPILER_VERSION))]
     pub compiler_version: Option<CompilerVersion>,
     #[clap(long, value_parser = clap::value_parser!(LanguageVersion),
-           default_value_if("move_2", "true", "2.1"))]
+           default_value_if("move_2", "true", LATEST_STABLE_LANGUAGE_VERSION))]
     pub language_version: Option<LanguageVersion>,
     #[clap(long)]
     pub skip_attribute_checks: bool,
diff --git a/aptos-move/framework/tests/move_unit_test.rs b/aptos-move/framework/tests/move_unit_test.rs
index d69c1d9697bb6..a84f0fea1332e 100644
--- a/aptos-move/framework/tests/move_unit_test.rs
+++ b/aptos-move/framework/tests/move_unit_test.rs
@@ -48,7 +48,7 @@ fn run_tests_for_pkg(path_to_pkg: impl Into<String>) {
     }
     if get_move_compiler_v2_from_env() {
         // Run test against v2 when MOVE_COMPILER_V2 is set
-        compiler_config.compiler_version = Some(CompilerVersion::V2_0);
+        compiler_config.compiler_version = Some(CompilerVersion::latest_stable());
         build_config.compiler_config = compiler_config;
         ok = run_move_unit_tests(
             &pkg_path,
diff --git a/crates/aptos/src/common/types.rs b/crates/aptos/src/common/types.rs
index 64a55c21cc90c..c218846e10e6e 100644
--- a/crates/aptos/src/common/types.rs
+++ b/crates/aptos/src/common/types.rs
@@ -53,7 +53,10 @@ use hex::FromHexError;
 use move_core_types::{
     account_address::AccountAddress, language_storage::TypeTag, vm_status::VMStatus,
 };
-use move_model::metadata::{CompilerVersion, LanguageVersion};
+use move_model::metadata::{
+    CompilerVersion, LanguageVersion, LATEST_STABLE_COMPILER_VERSION,
+    LATEST_STABLE_LANGUAGE_VERSION,
+};
 use move_package::source_package::std_lib::StdVersion;
 use serde::{Deserialize, Serialize};
 #[cfg(unix)]
@@ -1165,24 +1168,23 @@ pub struct MovePackageDir {
 
     /// ...or --compiler COMPILER_VERSION
     /// Specify the version of the compiler.
-    /// Defaults to `1`, or `2` if `--move-2` is selected.
+    /// Defaults to `1`, unless `--move-2` is selected.
     #[clap(long, value_parser = clap::value_parser!(CompilerVersion),
            alias = "compiler",
-           default_value_if("move_2", "true", "2.0"),
+           default_value_if("move_2", "true", LATEST_STABLE_COMPILER_VERSION),
            verbatim_doc_comment)]
     pub compiler_version: Option<CompilerVersion>,
 
     /// ...or --language LANGUAGE_VERSION
     /// Specify the language version to be supported.
-    /// Currently, defaults to `1`, unless `--move-2` is selected.
+    /// Defaults to `1`, unless `--move-2` is selected.
     #[clap(long, value_parser = clap::value_parser!(LanguageVersion),
            alias = "language",
-           default_value_if("move_2", "true", "2.1"),
+           default_value_if("move_2", "true", LATEST_STABLE_LANGUAGE_VERSION),
            verbatim_doc_comment)]
     pub language_version: Option<LanguageVersion>,
 
-    /// Select bytecode, language version, and compiler to support Move 2:
-    /// Same as `--bytecode-version=7 --language-version=2.1 --compiler-version=2.0`
+    /// Select bytecode, language, and compiler versions to support the latest Move 2.
     #[clap(long, verbatim_doc_comment)]
     pub move_2: bool,
 }
diff --git a/crates/aptos/src/governance/mod.rs b/crates/aptos/src/governance/mod.rs
index 175ca8ccc247f..48ed43d422d8b 100644
--- a/crates/aptos/src/governance/mod.rs
+++ b/crates/aptos/src/governance/mod.rs
@@ -43,7 +43,10 @@ use move_core_types::{
     ident_str, language_storage::ModuleId, parser::parse_type_tag,
     transaction_argument::TransactionArgument,
 };
-use move_model::metadata::{CompilerVersion, LanguageVersion};
+use move_model::metadata::{
+    CompilerVersion, LanguageVersion, LATEST_STABLE_COMPILER_VERSION,
+    LATEST_STABLE_LANGUAGE_VERSION,
+};
 use reqwest::Url;
 use serde::{Deserialize, Serialize};
 use std::{
@@ -913,11 +916,11 @@ pub struct CompileScriptFunction {
     pub bytecode_version: Option<u32>,
 
     #[clap(long, value_parser = clap::value_parser!(CompilerVersion),
-           default_value_if("move_2", "true", "2.0"))]
+           default_value_if("move_2", "true", LATEST_STABLE_COMPILER_VERSION))]
     pub compiler_version: Option<CompilerVersion>,
 
     #[clap(long, value_parser = clap::value_parser!(LanguageVersion),
-           default_value_if("move_2", "true", "2.0"))]
+           default_value_if("move_2", "true", LATEST_STABLE_LANGUAGE_VERSION))]
     pub language_version: Option<LanguageVersion>,
 
     /// Select bytecode, language, compiler for Move 2
diff --git a/crates/aptos/src/move_tool/lint.rs b/crates/aptos/src/move_tool/lint.rs
index 915379c3792cb..0b320098d65bf 100644
--- a/crates/aptos/src/move_tool/lint.rs
+++ b/crates/aptos/src/move_tool/lint.rs
@@ -10,7 +10,7 @@ use async_trait::async_trait;
 use clap::Parser;
 use move_compiler_v2::Experiment;
 use move_linter::MoveLintChecks;
-use move_model::metadata::{CompilerVersion, LanguageVersion};
+use move_model::metadata::{CompilerVersion, LanguageVersion, LATEST_STABLE_LANGUAGE_VERSION};
 use move_package::source_package::std_lib::StdVersion;
 use std::{collections::BTreeMap, path::PathBuf};
 
@@ -30,10 +30,10 @@ pub struct LintPackage {
 
     /// ...or --language LANGUAGE_VERSION
     /// Specify the language version to be supported.
-    /// Currently, defaults to `2.0`.
+    /// Defaults to the latest stable language version.
     #[clap(long, value_parser = clap::value_parser!(LanguageVersion),
            alias = "language",
-           default_value = "2.0",
+           default_value = LATEST_STABLE_LANGUAGE_VERSION,
            verbatim_doc_comment)]
     pub language_version: Option<LanguageVersion>,
 
diff --git a/third_party/move/move-compiler-v2/src/file_format_generator/module_generator.rs b/third_party/move/move-compiler-v2/src/file_format_generator/module_generator.rs
index 483020e61a99e..ab7c9b862dbd0 100644
--- a/third_party/move/move-compiler-v2/src/file_format_generator/module_generator.rs
+++ b/third_party/move/move-compiler-v2/src/file_format_generator/module_generator.rs
@@ -122,7 +122,9 @@ impl ModuleGenerator {
     ) -> (FF::CompiledModule, SourceMap, Option<FF::FunctionHandle>) {
         let options = module_env.env.get_extension::<Options>().expect("options");
         let language_version = options.language_version.unwrap_or_default();
-        let compiler_version = options.compiler_version.unwrap_or(CompilerVersion::V2_0);
+        let compiler_version = options
+            .compiler_version
+            .unwrap_or(CompilerVersion::latest_stable());
         let gen_access_specifiers = language_version.is_at_least(LanguageVersion::V2_0)
             && options.experiment_on(Experiment::GEN_ACCESS_SPECIFIERS);
         let compilation_metadata = CompilationMetadata::new(compiler_version, language_version);
diff --git a/third_party/move/move-compiler-v2/tests/testsuite.rs b/third_party/move/move-compiler-v2/tests/testsuite.rs
index fc9b5300aaa21..acbab3106d398 100644
--- a/third_party/move/move-compiler-v2/tests/testsuite.rs
+++ b/third_party/move/move-compiler-v2/tests/testsuite.rs
@@ -106,7 +106,7 @@ const TEST_CONFIGS: Lazy<BTreeMap<&str, TestConfig>> = Lazy::new(|| {
         // Turn optimization on by default. Some configs below may turn it off.
         .set_experiment(Experiment::OPTIMIZE, true)
         .set_experiment(Experiment::OPTIMIZE_WAITING_FOR_COMPARE_TESTS, true)
-        .set_language_version(LanguageVersion::V2_1);
+        .set_language_version(LanguageVersion::latest_stable());
     opts.testing = true;
     let configs = vec![
         // --- Tests for checking and ast processing
diff --git a/third_party/move/move-compiler-v2/transactional-tests/tests/tests.rs b/third_party/move/move-compiler-v2/transactional-tests/tests/tests.rs
index 15ac83d8d0dae..340a2fc584682 100644
--- a/third_party/move/move-compiler-v2/transactional-tests/tests/tests.rs
+++ b/third_party/move/move-compiler-v2/transactional-tests/tests/tests.rs
@@ -27,7 +27,9 @@ struct TestConfig {
     name: &'static str,
     runner: fn(&Path) -> datatest_stable::Result<()>,
     experiments: &'static [(&'static str, bool)],
-    language_version: LanguageVersion,
+    /// Run the tests with language version 1 (if true),
+    /// or with latest language version (if false).
+    is_lang_v1: bool,
     /// Path substrings for tests to include. If empty, all tests are included.
     include: &'static [&'static str],
     /// Path substrings for tests to exclude (applied after the include filter).
@@ -44,7 +46,7 @@ const TEST_CONFIGS: &[TestConfig] = &[
             (Experiment::OPTIMIZE_WAITING_FOR_COMPARE_TESTS, true),
             (Experiment::ACQUIRES_CHECK, false),
         ],
-        language_version: LanguageVersion::V2_1,
+        is_lang_v1: false,
         include: &[], // all tests except those excluded below
         exclude: &["/operator_eval/"],
     },
@@ -55,7 +57,7 @@ const TEST_CONFIGS: &[TestConfig] = &[
             (Experiment::OPTIMIZE, false),
             (Experiment::ACQUIRES_CHECK, false),
         ],
-        language_version: LanguageVersion::V2_1,
+        is_lang_v1: false,
         include: &[], // all tests except those excluded below
         exclude: &["/operator_eval/"],
     },
@@ -68,7 +70,7 @@ const TEST_CONFIGS: &[TestConfig] = &[
             (Experiment::AST_SIMPLIFY, false),
             (Experiment::ACQUIRES_CHECK, false),
         ],
-        language_version: LanguageVersion::V2_1,
+        is_lang_v1: false,
         include: &[], // all tests except those excluded below
         exclude: &["/operator_eval/"],
     },
@@ -76,7 +78,7 @@ const TEST_CONFIGS: &[TestConfig] = &[
         name: "operator-eval-lang-1",
         runner: |p| run(p, get_config_by_name("operator-eval-lang-1")),
         experiments: &[(Experiment::OPTIMIZE, true)],
-        language_version: LanguageVersion::V1,
+        is_lang_v1: true,
         include: &["/operator_eval/"],
         exclude: &[],
     },
@@ -84,7 +86,7 @@ const TEST_CONFIGS: &[TestConfig] = &[
         name: "operator-eval-lang-2",
         runner: |p| run(p, get_config_by_name("operator-eval-lang-2")),
         experiments: &[(Experiment::OPTIMIZE, true)],
-        language_version: LanguageVersion::V2_1,
+        is_lang_v1: false,
         include: &["/operator_eval/"],
         exclude: &[],
     },
@@ -134,7 +136,11 @@ fn run(path: &Path, config: TestConfig) -> datatest_stable::Result<()> {
         // Enable access control file format generation for those tests
         v2_experiments.push((Experiment::GEN_ACCESS_SPECIFIERS.to_string(), true))
     }
-    let language_version = config.language_version;
+    let language_version = if config.is_lang_v1 {
+        LanguageVersion::V1
+    } else {
+        LanguageVersion::latest_stable()
+    };
     let vm_test_config = if p.contains(SKIP_V1_COMPARISON_PATH) || move_test_debug() {
         TestRunConfig::CompilerV2 {
             language_version,
diff --git a/third_party/move/move-model/bytecode/ast-generator-tests/tests/testsuite.rs b/third_party/move/move-model/bytecode/ast-generator-tests/tests/testsuite.rs
index 557b3a7e837be..d1d392fcde9ca 100644
--- a/third_party/move/move-model/bytecode/ast-generator-tests/tests/testsuite.rs
+++ b/third_party/move/move-model/bytecode/ast-generator-tests/tests/testsuite.rs
@@ -35,7 +35,7 @@ fn test_runner(path: &Path) -> datatest_stable::Result<()> {
         named_address_mapping: vec!["std=0x1".to_string()],
         ..Options::default()
     };
-    options = options.set_language_version(LanguageVersion::V2_1);
+    options = options.set_language_version(LanguageVersion::latest_stable());
     let mut test_output = String::new();
     let mut error_writer = Buffer::no_color();
     match run_move_compiler_for_analysis(&mut error_writer, options) {
diff --git a/third_party/move/move-model/src/metadata.rs b/third_party/move/move-model/src/metadata.rs
index 1e7b3a0f1f049..338b6d9e94a29 100644
--- a/third_party/move/move-model/src/metadata.rs
+++ b/third_party/move/move-model/src/metadata.rs
@@ -17,6 +17,8 @@ use std::{
 };
 
 const UNSTABLE_MARKER: &str = "-unstable";
+pub const LATEST_STABLE_LANGUAGE_VERSION: &str = "2.1";
+pub const LATEST_STABLE_COMPILER_VERSION: &str = "2.0";
 
 pub static COMPILATION_METADATA_KEY: &[u8] = "compilation_metadata".as_bytes();
 
@@ -152,7 +154,7 @@ impl CompilerVersion {
 
     /// The latest stable compiler version.
     pub fn latest_stable() -> Self {
-        CompilerVersion::V2_0
+        CompilerVersion::from_str(LATEST_STABLE_COMPILER_VERSION).expect("valid version")
     }
 
     /// Check whether the compiler version supports the given language version,
@@ -256,7 +258,7 @@ impl LanguageVersion {
 
     /// The latest stable language version.
     pub fn latest_stable() -> Self {
-        LanguageVersion::V2_1
+        LanguageVersion::from_str(LATEST_STABLE_LANGUAGE_VERSION).expect("valid version")
     }
 
     /// Whether the language version is equal to greater than `ver`
diff --git a/third_party/move/tools/move-package/tests/test_runner.rs b/third_party/move/tools/move-package/tests/test_runner.rs
index 937a5313cb19d..dbc20ebb3e51a 100644
--- a/third_party/move/tools/move-package/tests/test_runner.rs
+++ b/third_party/move/tools/move-package/tests/test_runner.rs
@@ -124,7 +124,7 @@ fn check_or_update(
     update_baseline: bool,
     compiler_version: CompilerVersion,
 ) -> datatest_stable::Result<()> {
-    let exp_ext = if compiler_version == CompilerVersion::V2_0 {
+    let exp_ext = if compiler_version != CompilerVersion::V1 {
         EXP_EXT_V2
     } else {
         EXP_EXT