diff --git a/src/Microsoft.ComponentDetection.Detectors/ruby/RubyComponentDetector.cs b/src/Microsoft.ComponentDetection.Detectors/ruby/RubyComponentDetector.cs
index 93d9b7f82..ac4b886bb 100644
--- a/src/Microsoft.ComponentDetection.Detectors/ruby/RubyComponentDetector.cs
+++ b/src/Microsoft.ComponentDetection.Detectors/ruby/RubyComponentDetector.cs
@@ -220,17 +220,27 @@ private void ParseSection(ISingleFileComponentRecorder singleFileComponentRecord
                         wasParentDependencyExcluded = false;
                         var splits = line.Trim().Split(" ");
                         name = splits[0].Trim();
-                        var version = splits[1][1..^1];
+                        var fullVersion = splits[1][1..^1];
                         TypedComponent newComponent;
 
-                        if (this.IsVersionRelative(version))
+                        if (this.IsVersionRelative(fullVersion))
                         {
-                            this.Logger.LogWarning("Found component with invalid version, name = {RubyComponentName} and version = {RubyComponentVersion}", name, version);
-                            singleFileComponentRecorder.RegisterPackageParseFailure($"{name} - {version}");
+                            this.Logger.LogWarning("Found component with invalid version, name = {RubyComponentName} and version = {RubyComponentVersion}", name, fullVersion);
+                            singleFileComponentRecorder.RegisterPackageParseFailure($"{name} - {fullVersion}");
                             wasParentDependencyExcluded = true;
                             continue;
                         }
 
+                        // Ruby version strings are formatted differently from pure semantic versioning.
+                        // Specifically, everything after the dash is the platform, not the pre-release version. For
+                        // example: "1.19.4-x86_64-linux-gnu". Ruby represents pre-release versions by placing a letter
+                        // in the main version string. For example: "2.0.0.rc1".
+                        // See: https://guides.rubygems.org/patterns/#prerelease-gems
+
+                        // Remove the platform from the version string (if it exists).
+                        var versionParts = fullVersion.Split("-", 2);
+                        var version = versionParts[0];
+
                         if (sectionType == SectionType.GEM || sectionType == SectionType.PATH)
                         {
                             newComponent = new RubyGemsComponent(name, version, remote);
diff --git a/test/Microsoft.ComponentDetection.Detectors.Tests/RubyDetectorTest.cs b/test/Microsoft.ComponentDetection.Detectors.Tests/RubyDetectorTest.cs
index 44cb9543c..59cde69b3 100644
--- a/test/Microsoft.ComponentDetection.Detectors.Tests/RubyDetectorTest.cs
+++ b/test/Microsoft.ComponentDetection.Detectors.Tests/RubyDetectorTest.cs
@@ -405,6 +405,41 @@ public async Task TestRubyDetector_DetectorRecognizeLocalDependenciesAsync()
         this.AssertRubyComponentNameAndVersion(detectedComponents, name: "test2", version: "1.0.0");
     }
 
+    [TestMethod]
+    public async Task TestRubyDetector_StripPlatformAsync()
+    {
+        var gemFileLockContent = @"GEM
+  remote: https://rubygems.org/
+  specs:
+    nokogiri (1.19.4-aarch64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.19.4-aarch64-linux-musl)
+      racc (~> 1.4)
+    nokogiri (1.19.4-arm-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.19.4-arm-linux-musl)
+      racc (~> 1.4)
+    nokogiri (1.19.4-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.19.4-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.19.4-x86_64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.19.4-x86_64-linux-musl)
+      racc (~> 1.4)";
+
+        var (scanResult, componentRecorder) = await this.detectorTestUtility
+            .WithFile("1Gemfile.lock", gemFileLockContent)
+            .ExecuteDetectorAsync();
+
+        scanResult.ResultCode.Should().Be(ProcessingResultCode.Success);
+
+        var detectedComponents = componentRecorder.GetDetectedComponents();
+        detectedComponents.Should().HaveCount(1);
+
+        this.AssertRubyComponentNameAndVersion(detectedComponents, "nokogiri", "1.19.4");
+    }
+
     private void AssertRubyComponentNameAndVersion(IEnumerable<DetectedComponent> detectedComponents, string name, string version)
     {
         detectedComponents.SingleOrDefault(c =>