diff --git a/CHANGELOG.md b/CHANGELOG.md
index 254baa6e384..44c1bf287b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -83,6 +83,9 @@
 
 
 
+- **(css/compat)** Merge nesting into the compiler (#6686) ([1840e74](https://github.com/swc-project/swc/commit/1840e748af8334d244a1455a25325625b06fff93))
+
+
 - **(css/prefixer)** Use `eq_ignore_span` (#6656) ([d4660a4](https://github.com/swc-project/swc/commit/d4660a4673e19d628b7720e1352fa905bdc4456a))
 
 ### Testing
diff --git a/Cargo.lock b/Cargo.lock
index 121aab326fb..87ab00c94a8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3264,7 +3264,7 @@ dependencies = [
 
 [[package]]
 name = "swc_core"
-version = "0.48.40"
+version = "0.49.0"
 dependencies = [
  "anyhow",
  "binding_macros",
@@ -3317,7 +3317,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css"
-version = "0.144.31"
+version = "0.145.0"
 dependencies = [
  "swc_css_ast",
  "swc_css_codegen",
@@ -3374,7 +3374,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_compat"
-version = "0.16.18"
+version = "0.17.0"
 dependencies = [
  "bitflags",
  "once_cell",
@@ -3428,7 +3428,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_modules"
-version = "0.17.18"
+version = "0.18.0"
 dependencies = [
  "rustc-hash",
  "serde",
diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index 031db9da3db..75ed42497aa 100644
--- a/crates/swc_core/Cargo.toml
+++ b/crates/swc_core/Cargo.toml
@@ -6,7 +6,7 @@ edition       = "2021"
 license       = "Apache-2.0"
 name          = "swc_core"
 repository    = "https://github.com/swc-project/swc.git"
-version       = "0.48.40"
+version       = "0.49.0"
   [package.metadata.docs.rs]
   features = [
     "common_perf",
@@ -349,7 +349,7 @@ swc_common                       = { optional = true, version = "0.29.24", path
 swc_css_ast                      = { optional = true, version = "0.131.4", path = "../swc_css_ast" }
 swc_css_codegen                  = { optional = true, version = "0.141.12", path = "../swc_css_codegen" }
 swc_css_minifier                 = { optional = true, version = "0.106.20", path = "../swc_css_minifier" }
-swc_css_modules                  = { optional = true, version = "0.17.18", path = "../swc_css_modules" }
+swc_css_modules                  = { optional = true, version = "0.18.0", path = "../swc_css_modules" }
 swc_css_parser                   = { optional = true, version = "0.140.12", path = "../swc_css_parser" }
 swc_css_prefixer                 = { optional = true, version = "0.142.17", path = "../swc_css_prefixer" }
 swc_css_utils                    = { optional = true, version = "0.128.4", path = "../swc_css_utils/" }
@@ -381,7 +381,7 @@ swc_plugin_proxy                 = { optional = true, version = "0.23.8", path =
 swc_trace_macro                  = { optional = true, version = "0.1.2", path = "../swc_trace_macro" }
 testing                          = { optional = true, version = "0.31.26", path = "../testing" }
 # TODO: eventually swc_plugin_runner needs to remove default features
-swc_css_compat    = { version = "0.16.18", path = "../swc_css_compat", optional = true }
+swc_css_compat    = { version = "0.17.0", path = "../swc_css_compat", optional = true }
 swc_plugin_runner = { optional = true, version = "0.81.12", path = "../swc_plugin_runner", default-features = false }
 
 [build-dependencies]
diff --git a/crates/swc_css/Cargo.toml b/crates/swc_css/Cargo.toml
index 14a9c75c28d..a0c4426565a 100644
--- a/crates/swc_css/Cargo.toml
+++ b/crates/swc_css/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 license = "Apache-2.0"
 name = "swc_css"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.144.31"
+version = "0.145.0"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -24,9 +24,9 @@ prefixer = ["swc_css_prefixer"]
 [dependencies]
 swc_css_ast = {version = "0.131.4", path = "../swc_css_ast"}
 swc_css_codegen = {version = "0.141.12", path = "../swc_css_codegen"}
-swc_css_compat = {version = "0.16.18", path = "../swc_css_compat", optional = true}
+swc_css_compat = {version = "0.17.0", path = "../swc_css_compat", optional = true}
 swc_css_minifier = {version = "0.106.20", path = "../swc_css_minifier", optional = true}
-swc_css_modules = {version = "0.17.18", path = "../swc_css_modules", optional = true}
+swc_css_modules = {version = "0.18.0", path = "../swc_css_modules", optional = true}
 swc_css_parser = {version = "0.140.12", path = "../swc_css_parser"}
 swc_css_prefixer = {version = "0.142.17", path = "../swc_css_prefixer", optional = true}
 swc_css_utils = {version = "0.128.4", path = "../swc_css_utils/"}
diff --git a/crates/swc_css_compat/Cargo.toml b/crates/swc_css_compat/Cargo.toml
index 29c703970b4..37ee008cac7 100644
--- a/crates/swc_css_compat/Cargo.toml
+++ b/crates/swc_css_compat/Cargo.toml
@@ -7,7 +7,7 @@ include = ["Cargo.toml", "src/**/*.rs", "src/**/*.json", "data/**/*.json"]
 license = "Apache-2.0"
 name = "swc_css_compat"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.16.18"
+version = "0.17.0"
 
 [lib]
 bench = false
diff --git a/crates/swc_css_modules/Cargo.toml b/crates/swc_css_modules/Cargo.toml
index 3ced6bdd9d3..ce7745b4d35 100644
--- a/crates/swc_css_modules/Cargo.toml
+++ b/crates/swc_css_modules/Cargo.toml
@@ -7,7 +7,7 @@ include = ["Cargo.toml", "src/**/*.rs"]
 license = "Apache-2.0"
 name = "swc_css_modules"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.17.18"
+version = "0.18.0"
 
 [lib]
 bench = false
@@ -26,5 +26,5 @@ swc_css_visit = {version = "0.130.4", path = "../swc_css_visit"}
 
 [dev-dependencies]
 serde_json = "1"
-swc_css_compat = {version = "0.16.18", path = "../swc_css_compat"}
+swc_css_compat = {version = "0.17.0", path = "../swc_css_compat"}
 testing = {version = "0.31.26", path = "../testing"}