diff --git a/README.md b/README.md
index 2c6b07e9..82c28b39 100644
--- a/README.md
+++ b/README.md
@@ -377,6 +377,7 @@ But if you wish to select or exclude specific linters, we give you full control
 | **VALIDATE_RUBY**                  | `true`                          | Flag to enable or disable the linting process of the Ruby language.                                                                                                                                                  |
 | **VALIDATE_RUST_2015**             | `true`                          | Flag to enable or disable the linting process of the Rust language. (edition: 2015)                                                                                                                                  |
 | **VALIDATE_RUST_2018**             | `true`                          | Flag to enable or disable the linting process of Rust language. (edition: 2018)                                                                                                                                      |
+| **VALIDATE_RUST_2021**             | `true`                          | Flag to enable or disable the linting process of Rust language. (edition: 2021)                                                                                                                                      |
 | **VALIDATE_RUST_CLIPPY**           | `true`                          | Flag to enable or disable the clippy linting process of Rust language.                                                                                                                                               |
 | **VALIDATE_SCALAFMT_LINT**         | `true`                          | Flag to enable or disable the linting process of Scala language. (Utilizing: scalafmt --test)                                                                                                                        |
 | **VALIDATE_SHELL_SHFMT**           | `true`                          | Flag to enable or disable the linting process of Shell scripts. (Utilizing: shfmt)                                                                                                                                   |
diff --git a/lib/linter.sh b/lib/linter.sh
index 16a42f73..221d9704 100755
--- a/lib/linter.sh
+++ b/lib/linter.sh
@@ -242,9 +242,10 @@ LANGUAGE_ARRAY=('ANSIBLE' 'ARM' 'BASH' 'BASH_EXEC' 'CLANG_FORMAT'
   'OPENAPI' 'PERL' 'PHP_BUILTIN' 'PHP_PHPCS' 'PHP_PHPSTAN' 'PHP_PSALM'
   'POWERSHELL' 'PROTOBUF' 'PYTHON_BLACK' 'PYTHON_PYLINT' 'PYTHON_FLAKE8'
   'PYTHON_ISORT' 'PYTHON_MYPY' 'R' 'RAKU' 'RUBY' 'RUST_2015' 'RUST_2018'
-  'RUST_CLIPPY' 'SCALAFMT' 'SHELL_SHFMT' 'SNAKEMAKE_LINT' 'SNAKEMAKE_SNAKEFMT'
-  'STATES' 'SQL' 'SQLFLUFF' 'TEKTON' 'TERRAFORM_TFLINT' 'TERRAFORM_TERRASCAN'
-  'TERRAGRUNT' 'TSX' 'TYPESCRIPT_ES' "${TYPESCRIPT_STYLE_NAME}" 'XML' 'YAML')
+  'RUST_2021' 'RUST_CLIPPY' 'SCALAFMT' 'SHELL_SHFMT' 'SNAKEMAKE_LINT'
+  'SNAKEMAKE_SNAKEFMT' 'STATES' 'SQL' 'SQLFLUFF' 'TEKTON' 'TERRAFORM_TFLINT'
+  'TERRAFORM_TERRASCAN' 'TERRAGRUNT' 'TSX' 'TYPESCRIPT_ES'
+  "${TYPESCRIPT_STYLE_NAME}" 'XML' 'YAML')
 
 ##############################
 # Linter command names array #
@@ -304,6 +305,7 @@ LINTER_NAMES_ARRAY['RAKU']="raku"
 LINTER_NAMES_ARRAY['RUBY']="rubocop"
 LINTER_NAMES_ARRAY['RUST_2015']="rustfmt"
 LINTER_NAMES_ARRAY['RUST_2018']="rustfmt"
+LINTER_NAMES_ARRAY['RUST_2021']="rustfmt"
 LINTER_NAMES_ARRAY['RUST_CLIPPY']="clippy"
 LINTER_NAMES_ARRAY['SCALAFMT']="scalafmt"
 LINTER_NAMES_ARRAY['SHELL_SHFMT']="shfmt"
@@ -757,7 +759,8 @@ UpdateLoopsForImage() {
     #############################################
     # Need to remove linters for the slim image #
     #############################################
-    REMOVE_ARRAY=("ARM" "CSHARP" "ENV" "POWERSHELL" "RUST_2015" "RUST_2018" "RUST_CLIPPY")
+    REMOVE_ARRAY=("ARM" "CSHARP" "ENV" "POWERSHELL" "RUST_2015" "RUST_2018"
+      "RUST_2021" "RUST_CLIPPY")
 
     # Remove from LANGUAGE_ARRAY
     echo "Removing Languages from LANGUAGE_ARRAY for slim image..."
@@ -923,6 +926,7 @@ LINTER_COMMANDS_ARRAY['RAKU']="raku"
 LINTER_COMMANDS_ARRAY['RUBY']="rubocop -c ${RUBY_LINTER_RULES} --force-exclusion"
 LINTER_COMMANDS_ARRAY['RUST_2015']="rustfmt --check --edition 2015"
 LINTER_COMMANDS_ARRAY['RUST_2018']="rustfmt --check --edition 2018"
+LINTER_COMMANDS_ARRAY['RUST_2021']="rustfmt --check --edition 2021"
 LINTER_COMMANDS_ARRAY['RUST_CLIPPY']="clippy"
 LINTER_COMMANDS_ARRAY['SCALAFMT']="scalafmt --config ${SCALAFMT_LINTER_RULES} --test"
 LINTER_COMMANDS_ARRAY['SHELL_SHFMT']="shfmt -d"