diff --git a/Source/SwiftLintFramework/Rules/RuleConfigurations/NumberSeparatorConfiguration.swift b/Source/SwiftLintFramework/Rules/RuleConfigurations/NumberSeparatorConfiguration.swift
index 2dee7e3ef..a097b2b07 100644
--- a/Source/SwiftLintFramework/Rules/RuleConfigurations/NumberSeparatorConfiguration.swift
+++ b/Source/SwiftLintFramework/Rules/RuleConfigurations/NumberSeparatorConfiguration.swift
@@ -2,7 +2,7 @@ public struct NumberSeparatorConfiguration: RuleConfiguration, Equatable {
     private(set) var severityConfiguration = SeverityConfiguration(.warning)
     private(set) var minimumLength: Int
     private(set) var minimumFractionLength: Int?
-    private(set) var validRanges: [Range<Double>]
+    private(set) var excludeRanges: [Range<Double>]
 
     public var consoleDescription: String {
         let minimumFractionLengthDescription: String
@@ -16,10 +16,10 @@ public struct NumberSeparatorConfiguration: RuleConfiguration, Equatable {
             + minimumFractionLengthDescription
     }
 
-    public init(minimumLength: Int, minimumFractionLength: Int?, validRanges: [Range<Double>]) {
+    public init(minimumLength: Int, minimumFractionLength: Int?, excludeRanges: [Range<Double>]) {
         self.minimumLength = minimumLength
         self.minimumFractionLength = minimumFractionLength
-        self.validRanges = validRanges
+        self.excludeRanges = excludeRanges
     }
 
     public mutating func apply(configuration: Any) throws {
@@ -35,8 +35,8 @@ public struct NumberSeparatorConfiguration: RuleConfiguration, Equatable {
             self.minimumFractionLength = minimumFractionLength
         }
 
-        if let validRanges = configuration["valid_ranges"] as? [[String: Any]] {
-            self.validRanges = validRanges.compactMap { dict in
+        if let excludeRanges = configuration["exclude_ranges"] as? [[String: Any]] {
+            self.excludeRanges = excludeRanges.compactMap { dict in
                 guard let min = dict["min"] as? Double, let max = dict["max"] as? Double else { return nil }
                 return min ..< max
             }
diff --git a/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift b/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift
index edbaef359..58148416b 100644
--- a/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift
@@ -5,7 +5,7 @@ public struct NumberSeparatorRule: OptInRule, CorrectableRule, ConfigurationProv
     public var configuration = NumberSeparatorConfiguration(
         minimumLength: 0,
         minimumFractionLength: nil,
-        validRanges: []
+        excludeRanges: []
     )
 
     public init() {}
@@ -116,7 +116,8 @@ public struct NumberSeparatorRule: OptInRule, CorrectableRule, ConfigurationProv
     }
 
     private func isInValidRanges(number: String) -> Bool {
-        if let double = Double(number), configuration.validRanges.contains(where: { $0.contains(double) }) {
+        let doubleValue = Double(number.replacingOccurrences(of: "_", with: ""))
+        if let doubleValue = doubleValue, configuration.excludeRanges.contains(where: { $0.contains(doubleValue) }) {
             return true
         }
 
diff --git a/Tests/SwiftLintFrameworkTests/NumberSeparatorRuleTests.swift b/Tests/SwiftLintFrameworkTests/NumberSeparatorRuleTests.swift
index b7b442406..c49001c05 100644
--- a/Tests/SwiftLintFrameworkTests/NumberSeparatorRuleTests.swift
+++ b/Tests/SwiftLintFrameworkTests/NumberSeparatorRuleTests.swift
@@ -59,13 +59,18 @@ class NumberSeparatorRuleTests: XCTestCase {
         verifyRule(description, ruleConfiguration: ["minimum_fraction_length": 5])
     }
 
-    func testNumberSeparatorWithValidRanges() {
+    func testNumberSeparatorWithExcludeRanges() {
         let nonTriggeringExamples = [
             "let foo = 1950",
+            "let foo = 1_950",
             "let foo = 1985",
+            "let foo = 1_985",
             "let foo = 2020",
+            "let foo = 2_020",
             "let foo = 2.10042",
-            "let foo = 2.833333"
+            "let foo = 2.100_42",
+            "let foo = 2.833333",
+            "let foo = 2.833_333"
         ]
         let triggeringExamples = [
             "let foo = ↓1000",
@@ -88,7 +93,7 @@ class NumberSeparatorRuleTests: XCTestCase {
         verifyRule(
             description,
             ruleConfiguration: [
-                "valid_ranges": [
+                "exclude_ranges": [
                     ["min": 1900, "max": 2030],
                     ["min": 2.0, "max": 3.0]
                 ]