diff --git a/CHANGELOG.md b/CHANGELOG.md
index 611a7a7cdb8f..19ecbe8f74db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@
 
 
 
+- **(css/utils)** Fix minification of class names with whitespace (#6983) ([cc1d9bd](https://github.com/swc-project/swc/commit/cc1d9bd567340203d5d2bd228a4d0b19f8052202))
+
+
 - **(es/decorator)** Preserve evaluation order (#6972) ([703b340](https://github.com/swc-project/swc/commit/703b340d39c3efb69f4a0d375ab6e5a2f9a4acd9))
 
 ### Miscellaneous Tasks
diff --git a/Cargo.lock b/Cargo.lock
index 8d23bfc5df1f..7541e3eb1480 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3306,7 +3306,7 @@ dependencies = [
 
 [[package]]
 name = "swc_core"
-version = "0.59.39"
+version = "0.59.40"
 dependencies = [
  "anyhow",
  "binding_macros",
@@ -3359,7 +3359,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css"
-version = "0.149.7"
+version = "0.149.8"
 dependencies = [
  "swc_css_ast",
  "swc_css_codegen",
@@ -3387,7 +3387,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_codegen"
-version = "0.144.5"
+version = "0.144.6"
 dependencies = [
  "auto_impl",
  "bitflags",
@@ -3416,7 +3416,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_compat"
-version = "0.20.5"
+version = "0.20.6"
 dependencies = [
  "bitflags",
  "once_cell",
@@ -3453,7 +3453,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_minifier"
-version = "0.109.5"
+version = "0.109.6"
 dependencies = [
  "criterion",
  "serde",
@@ -3470,7 +3470,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_modules"
-version = "0.21.7"
+version = "0.21.8"
 dependencies = [
  "rustc-hash",
  "serde",
@@ -3504,7 +3504,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_prefixer"
-version = "0.146.5"
+version = "0.146.6"
 dependencies = [
  "once_cell",
  "preset_env_base",
@@ -3522,7 +3522,7 @@ dependencies = [
 
 [[package]]
 name = "swc_css_utils"
-version = "0.131.5"
+version = "0.131.6"
 dependencies = [
  "once_cell",
  "serde",
@@ -4208,7 +4208,7 @@ dependencies = [
 
 [[package]]
 name = "swc_html"
-version = "0.109.30"
+version = "0.109.31"
 dependencies = [
  "swc_html_ast",
  "swc_html_codegen",
@@ -4260,7 +4260,7 @@ dependencies = [
 
 [[package]]
 name = "swc_html_minifier"
-version = "0.106.30"
+version = "0.106.31"
 dependencies = [
  "criterion",
  "once_cell",
diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index 5d43ddacf518..d7922ad7851b 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       = "0.59.39"
+version       = "0.59.40"
   [package.metadata.docs.rs]
   features = [
     "common_perf",
@@ -347,12 +347,12 @@ swc_bundler                      = { optional = true, version = "0.199.31", path
 swc_cached                       = { optional = true, version = "0.3.15", path = "../swc_cached" }
 swc_common                       = { optional = true, version = "0.29.32", path = "../swc_common" }
 swc_css_ast                      = { optional = true, version = "0.134.5", path = "../swc_css_ast" }
-swc_css_codegen                  = { optional = true, version = "0.144.5", path = "../swc_css_codegen" }
-swc_css_minifier                 = { optional = true, version = "0.109.5", path = "../swc_css_minifier" }
-swc_css_modules                  = { optional = true, version = "0.21.7", path = "../swc_css_modules" }
+swc_css_codegen                  = { optional = true, version = "0.144.6", path = "../swc_css_codegen" }
+swc_css_minifier                 = { optional = true, version = "0.109.6", path = "../swc_css_minifier" }
+swc_css_modules                  = { optional = true, version = "0.21.8", path = "../swc_css_modules" }
 swc_css_parser                   = { optional = true, version = "0.143.5", path = "../swc_css_parser" }
-swc_css_prefixer                 = { optional = true, version = "0.146.5", path = "../swc_css_prefixer" }
-swc_css_utils                    = { optional = true, version = "0.131.5", path = "../swc_css_utils/" }
+swc_css_prefixer                 = { optional = true, version = "0.146.6", path = "../swc_css_prefixer" }
+swc_css_utils                    = { optional = true, version = "0.131.6", path = "../swc_css_utils/" }
 swc_css_visit                    = { optional = true, version = "0.133.5", path = "../swc_css_visit" }
 swc_ecma_ast                     = { optional = true, version = "0.96.7", path = "../swc_ecma_ast" }
 swc_ecma_codegen                 = { optional = true, version = "0.129.15", path = "../swc_ecma_codegen" }
@@ -381,7 +381,7 @@ swc_plugin_proxy                 = { optional = true, version = "0.25.5", path =
 swc_trace_macro                  = { optional = true, version = "0.1.2", path = "../swc_trace_macro" }
 testing                          = { optional = true, version = "0.31.34", path = "../testing" }
 # TODO: eventually swc_plugin_runner needs to remove default features
-swc_css_compat    = { version = "0.20.5", path = "../swc_css_compat", optional = true }
+swc_css_compat    = { version = "0.20.6", path = "../swc_css_compat", optional = true }
 swc_plugin_runner = { optional = true, version = "0.85.13", path = "../swc_plugin_runner", default-features = false }
 
 [build-dependencies]
diff --git a/crates/swc_css/Cargo.toml b/crates/swc_css/Cargo.toml
index 0d5b19339045..188718412600 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       = "0.149.7"
+version       = "0.149.8"
 
   [package.metadata.docs.rs]
   all-features = true
@@ -23,11 +23,11 @@ prefixer = ["swc_css_prefixer"]
 
 [dependencies]
 swc_css_ast      = { version = "0.134.5", path = "../swc_css_ast" }
-swc_css_codegen  = { version = "0.144.5", path = "../swc_css_codegen" }
-swc_css_compat   = { version = "0.20.5", path = "../swc_css_compat", optional = true }
-swc_css_minifier = { version = "0.109.5", path = "../swc_css_minifier", optional = true }
-swc_css_modules  = { version = "0.21.7", path = "../swc_css_modules", optional = true }
+swc_css_codegen  = { version = "0.144.6", path = "../swc_css_codegen" }
+swc_css_compat   = { version = "0.20.6", path = "../swc_css_compat", optional = true }
+swc_css_minifier = { version = "0.109.6", path = "../swc_css_minifier", optional = true }
+swc_css_modules  = { version = "0.21.8", path = "../swc_css_modules", optional = true }
 swc_css_parser   = { version = "0.143.5", path = "../swc_css_parser" }
-swc_css_prefixer = { version = "0.146.5", path = "../swc_css_prefixer", optional = true }
-swc_css_utils    = { version = "0.131.5", path = "../swc_css_utils/" }
+swc_css_prefixer = { version = "0.146.6", path = "../swc_css_prefixer", optional = true }
+swc_css_utils    = { version = "0.131.6", path = "../swc_css_utils/" }
 swc_css_visit    = { version = "0.133.5", path = "../swc_css_visit" }
diff --git a/crates/swc_css_codegen/Cargo.toml b/crates/swc_css_codegen/Cargo.toml
index 89395dca09a0..8987dd229953 100644
--- a/crates/swc_css_codegen/Cargo.toml
+++ b/crates/swc_css_codegen/Cargo.toml
@@ -7,7 +7,7 @@ include       = ["Cargo.toml", "src/**/*.rs"]
 license       = "Apache-2.0"
 name          = "swc_css_codegen"
 repository    = "https://github.com/swc-project/swc.git"
-version       = "0.144.5"
+version       = "0.144.6"
 
 [lib]
 bench = false
@@ -21,7 +21,7 @@ swc_atoms              = { version = "0.4.37", path = "../swc_atoms" }
 swc_common             = { version = "0.29.32", path = "../swc_common" }
 swc_css_ast            = { version = "0.134.5", path = "../swc_css_ast" }
 swc_css_codegen_macros = { version = "0.2.0", path = "../swc_css_codegen_macros" }
-swc_css_utils          = { version = "0.131.5", path = "../swc_css_utils" }
+swc_css_utils          = { version = "0.131.6", path = "../swc_css_utils" }
 
 [dev-dependencies]
 swc_common = { version = "0.29.32", path = "../swc_common", features = [
diff --git a/crates/swc_css_compat/Cargo.toml b/crates/swc_css_compat/Cargo.toml
index dc820851af5c..82d5134869c4 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       = "0.20.5"
+version       = "0.20.6"
 
 [lib]
 bench = false
@@ -20,10 +20,10 @@ serde_json    = "1.0.61"
 swc_atoms     = { version = "0.4.37", path = "../swc_atoms" }
 swc_common    = { version = "0.29.32", path = "../swc_common" }
 swc_css_ast   = { version = "0.134.5", path = "../swc_css_ast" }
-swc_css_utils = { version = "0.131.5", path = "../swc_css_utils/" }
+swc_css_utils = { version = "0.131.6", path = "../swc_css_utils/" }
 swc_css_visit = { version = "0.133.5", path = "../swc_css_visit" }
 
 [dev-dependencies]
-swc_css_codegen = { version = "0.144.5", path = "../swc_css_codegen" }
+swc_css_codegen = { version = "0.144.6", path = "../swc_css_codegen" }
 swc_css_parser  = { version = "0.143.5", path = "../swc_css_parser" }
 testing         = { version = "0.31.34", path = "../testing" }
diff --git a/crates/swc_css_minifier/Cargo.toml b/crates/swc_css_minifier/Cargo.toml
index 44d96eb0d4ac..2318a1d954c4 100644
--- a/crates/swc_css_minifier/Cargo.toml
+++ b/crates/swc_css_minifier/Cargo.toml
@@ -7,7 +7,7 @@ include       = ["Cargo.toml", "src/**/*.rs"]
 license       = "Apache-2.0"
 name          = "swc_css_minifier"
 repository    = "https://github.com/swc-project/swc.git"
-version       = "0.109.5"
+version       = "0.109.6"
 
 [lib]
 bench = false
@@ -17,12 +17,12 @@ serde         = "1.0.118"
 swc_atoms     = { version = "0.4.37", path = "../swc_atoms" }
 swc_common    = { version = "0.29.32", path = "../swc_common" }
 swc_css_ast   = { version = "0.134.5", path = "../swc_css_ast" }
-swc_css_utils = { version = "0.131.5", path = "../swc_css_utils/" }
+swc_css_utils = { version = "0.131.6", path = "../swc_css_utils/" }
 swc_css_visit = { version = "0.133.5", path = "../swc_css_visit" }
 
 [dev-dependencies]
 criterion       = "0.3"
-swc_css_codegen = { version = "0.144.5", path = "../swc_css_codegen" }
+swc_css_codegen = { version = "0.144.6", path = "../swc_css_codegen" }
 swc_css_parser  = { version = "0.143.5", path = "../swc_css_parser" }
 swc_node_base   = { version = "0.5.8", path = "../swc_node_base" }
 testing         = { version = "0.31.34", path = "../testing" }
diff --git a/crates/swc_css_modules/Cargo.toml b/crates/swc_css_modules/Cargo.toml
index 38589ffc31df..9dda24f04a83 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       = "0.21.7"
+version       = "0.21.8"
 
 [lib]
 bench = false
@@ -20,11 +20,11 @@ serde           = { version = "1", features = ["derive"] }
 swc_atoms       = { version = "0.4.37", path = "../swc_atoms" }
 swc_common      = { version = "0.29.32", path = "../swc_common" }
 swc_css_ast     = { version = "0.134.5", path = "../swc_css_ast" }
-swc_css_codegen = { version = "0.144.5", path = "../swc_css_codegen" }
+swc_css_codegen = { version = "0.144.6", path = "../swc_css_codegen" }
 swc_css_parser  = { version = "0.143.5", path = "../swc_css_parser" }
 swc_css_visit   = { version = "0.133.5", path = "../swc_css_visit" }
 
 [dev-dependencies]
 serde_json     = "1"
-swc_css_compat = { version = "0.20.5", path = "../swc_css_compat" }
+swc_css_compat = { version = "0.20.6", path = "../swc_css_compat" }
 testing        = { version = "0.31.34", path = "../testing" }
diff --git a/crates/swc_css_prefixer/Cargo.toml b/crates/swc_css_prefixer/Cargo.toml
index 2c8e808bb443..97cf93013a22 100644
--- a/crates/swc_css_prefixer/Cargo.toml
+++ b/crates/swc_css_prefixer/Cargo.toml
@@ -7,7 +7,7 @@ include       = ["Cargo.toml", "src/**/*.rs", "src/**/*.json", "data/**/*.json"]
 license       = "Apache-2.0"
 name          = "swc_css_prefixer"
 repository    = "https://github.com/swc-project/swc.git"
-version       = "0.146.5"
+version       = "0.146.6"
 
 [lib]
 bench = false
@@ -20,10 +20,10 @@ serde_json      = "1.0.61"
 swc_atoms       = { version = "0.4.37", path = "../swc_atoms" }
 swc_common      = { version = "0.29.32", path = "../swc_common" }
 swc_css_ast     = { version = "0.134.5", path = "../swc_css_ast" }
-swc_css_utils   = { version = "0.131.5", path = "../swc_css_utils/" }
+swc_css_utils   = { version = "0.131.6", path = "../swc_css_utils/" }
 swc_css_visit   = { version = "0.133.5", path = "../swc_css_visit" }
 
 [dev-dependencies]
-swc_css_codegen = { version = "0.144.5", path = "../swc_css_codegen" }
+swc_css_codegen = { version = "0.144.6", path = "../swc_css_codegen" }
 swc_css_parser  = { version = "0.143.5", path = "../swc_css_parser" }
 testing         = { version = "0.31.34", path = "../testing" }
diff --git a/crates/swc_css_utils/Cargo.toml b/crates/swc_css_utils/Cargo.toml
index ef0552c1b0e4..6f41cc0e8ca4 100644
--- a/crates/swc_css_utils/Cargo.toml
+++ b/crates/swc_css_utils/Cargo.toml
@@ -7,7 +7,7 @@ include       = ["Cargo.toml", "src/**/*.rs", "src/**/*.json"]
 license       = "Apache-2.0"
 name          = "swc_css_utils"
 repository    = "https://github.com/swc-project/swc.git"
-version       = "0.131.5"
+version       = "0.131.6"
 
 [lib]
 bench = false
diff --git a/crates/swc_html/Cargo.toml b/crates/swc_html/Cargo.toml
index afc63835164b..aa05e4f8c9cc 100644
--- a/crates/swc_html/Cargo.toml
+++ b/crates/swc_html/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 license = "Apache-2.0"
 name = "swc_html"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.109.30"
+version = "0.109.31"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -21,6 +21,6 @@ minifier = ["swc_html_minifier"]
 [dependencies]
 swc_html_ast = {version = "0.28.24", path = "../swc_html_ast"}
 swc_html_codegen = {version = "0.37.36", path = "../swc_html_codegen"}
-swc_html_minifier = {version = "0.106.30", path = "../swc_html_minifier", optional = true}
+swc_html_minifier = {version = "0.106.31", path = "../swc_html_minifier", optional = true}
 swc_html_parser = {version = "0.34.35", path = "../swc_html_parser"}
 swc_html_visit = {version = "0.28.24", path = "../swc_html_visit"}
diff --git a/crates/swc_html_minifier/Cargo.toml b/crates/swc_html_minifier/Cargo.toml
index 747212ff4f6b..d842f6620c12 100644
--- a/crates/swc_html_minifier/Cargo.toml
+++ b/crates/swc_html_minifier/Cargo.toml
@@ -10,7 +10,7 @@ include = ["Cargo.toml", "src/**/*.rs", "data/**/*.json"]
 license = "Apache-2.0"
 name = "swc_html_minifier"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.106.30"
+version = "0.106.31"
 
 [lib]
 bench = false
@@ -23,8 +23,8 @@ swc_atoms                = { version = "0.4.37", path = "../swc_atoms" }
 swc_cached               = { version = "0.3.15", path = "../swc_cached" }
 swc_common               = { version = "0.29.32", path = "../swc_common" }
 swc_css_ast              = { version = "0.134.5", path = "../swc_css_ast" }
-swc_css_codegen          = { version = "0.144.5", path = "../swc_css_codegen" }
-swc_css_minifier         = { version = "0.109.5", path = "../swc_css_minifier" }
+swc_css_codegen          = { version = "0.144.6", path = "../swc_css_codegen" }
+swc_css_minifier         = { version = "0.109.6", path = "../swc_css_minifier" }
 swc_css_parser           = { version = "0.143.5", path = "../swc_css_parser" }
 swc_ecma_ast             = { version = "0.96.7", path = "../swc_ecma_ast" }
 swc_ecma_codegen         = { version = "0.129.15", path = "../swc_ecma_codegen" }