diff --git a/src/Readme.txt b/src/Readme.txt
index e455aa32..24e51af6 100644
--- a/src/Readme.txt
+++ b/src/Readme.txt
@@ -67,6 +67,10 @@ For further details take a look at LICENSE.txt.
 
 CHANGELOG
 
+5.1.24.0
+
+    * Fix: #619 Improved report parsing to avoid integer overflow
+
 5.1.23.0
 
     * New: Added minimum coverage thresholds to validate coverage goals
diff --git a/src/ReportGenerator.Core/Parser/CloverParser.cs b/src/ReportGenerator.Core/Parser/CloverParser.cs
index 6888fa4d..0515834b 100644
--- a/src/ReportGenerator.Core/Parser/CloverParser.cs
+++ b/src/ReportGenerator.Core/Parser/CloverParser.cs
@@ -217,8 +217,8 @@ private static Dictionary<int, ICollection<Branch>> GetBranches(IEnumerable<XEle
 
                 int lineNumber = int.Parse(line.Attribute("num").Value, CultureInfo.InvariantCulture);
 
-                int negativeBrancheCovered = int.Parse(line.Attribute("falsecount").Value, CultureInfo.InvariantCulture);
-                int positiveBrancheCovered = int.Parse(line.Attribute("truecount").Value, CultureInfo.InvariantCulture);
+                int negativeBrancheCovered = line.Attribute("falsecount").Value.ParseLargeInteger();
+                int positiveBrancheCovered = line.Attribute("truecount").Value.ParseLargeInteger();
 
                 if (result.ContainsKey(lineNumber))
                 {
diff --git a/src/ReportGenerator.Core/Parser/CoberturaParser.cs b/src/ReportGenerator.Core/Parser/CoberturaParser.cs
index 2c08f1cc..59b5ad9c 100644
--- a/src/ReportGenerator.Core/Parser/CoberturaParser.cs
+++ b/src/ReportGenerator.Core/Parser/CoberturaParser.cs
@@ -437,8 +437,8 @@ private static Dictionary<int, ICollection<Branch>> GetBranches(IEnumerable<XEle
                 {
                     int lineNumber = int.Parse(line.Attribute("number").Value, CultureInfo.InvariantCulture);
 
-                    int numberOfCoveredBranches = int.Parse(match.Groups["NumberOfCoveredBranches"].Value, CultureInfo.InvariantCulture);
-                    int numberOfTotalBranches = int.Parse(match.Groups["NumberOfTotalBranches"].Value, CultureInfo.InvariantCulture);
+                    int numberOfCoveredBranches = match.Groups["NumberOfCoveredBranches"].Value.ParseLargeInteger();
+                    int numberOfTotalBranches = match.Groups["NumberOfTotalBranches"].Value.ParseLargeInteger();
 
                     var branches = new HashSet<Branch>();
 
diff --git a/src/ReportGenerator.Core/Parser/DynamicCodeCoverageParser.cs b/src/ReportGenerator.Core/Parser/DynamicCodeCoverageParser.cs
index 74b4ae8f..a447bc4d 100644
--- a/src/ReportGenerator.Core/Parser/DynamicCodeCoverageParser.cs
+++ b/src/ReportGenerator.Core/Parser/DynamicCodeCoverageParser.cs
@@ -5,6 +5,7 @@
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Xml.Linq;
+using Palmmedia.ReportGenerator.Core.Common;
 using Palmmedia.ReportGenerator.Core.Logging;
 using Palmmedia.ReportGenerator.Core.Parser.Analysis;
 using Palmmedia.ReportGenerator.Core.Parser.Filtering;
@@ -263,8 +264,8 @@ private static void SetMethodMetrics(CodeFile codeFile, IEnumerable<XElement> me
 
                 var metrics = new[]
                 {
-                    Metric.BlocksCovered(int.Parse(method.Attribute("blocks_covered").Value, CultureInfo.InvariantCulture)),
-                    Metric.BlocksNotCovered(int.Parse(method.Attribute("blocks_not_covered").Value, CultureInfo.InvariantCulture))
+                    Metric.BlocksCovered(method.Attribute("blocks_covered").Value.ParseLargeInteger()),
+                    Metric.BlocksNotCovered(method.Attribute("blocks_not_covered").Value.ParseLargeInteger())
                 };
 
                 var methodMetric = new MethodMetric(fullName, shortName, metrics);
diff --git a/src/ReportGenerator.Core/Parser/JaCoCoParser.cs b/src/ReportGenerator.Core/Parser/JaCoCoParser.cs
index 10fadc65..7e82e876 100644
--- a/src/ReportGenerator.Core/Parser/JaCoCoParser.cs
+++ b/src/ReportGenerator.Core/Parser/JaCoCoParser.cs
@@ -5,6 +5,7 @@
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Xml.Linq;
+using Palmmedia.ReportGenerator.Core.Common;
 using Palmmedia.ReportGenerator.Core.Logging;
 using Palmmedia.ReportGenerator.Core.Parser.Analysis;
 using Palmmedia.ReportGenerator.Core.Parser.Filtering;
@@ -182,10 +183,10 @@ private static CodeFile ProcessFile(XElement[] modules, Class @class, string fil
                 .Select(line => new JaCoCoLineCoverage()
                 {
                     LineNumber = int.Parse(line.Attribute("nr").Value, CultureInfo.InvariantCulture),
-                    MissedInstructions = int.Parse(line.Attribute("mi")?.Value ?? "0", CultureInfo.InvariantCulture),
-                    CoveredInstructions = int.Parse(line.Attribute("ci")?.Value ?? "0", CultureInfo.InvariantCulture),
-                    MissedBranches = int.Parse(line.Attribute("mb")?.Value ?? "0", CultureInfo.InvariantCulture),
-                    CoveredBranches = int.Parse(line.Attribute("cb")?.Value ?? "0", CultureInfo.InvariantCulture)
+                    MissedInstructions = (line.Attribute("mi")?.Value ?? "0").ParseLargeInteger(),
+                    CoveredInstructions = (line.Attribute("ci")?.Value ?? "0").ParseLargeInteger(),
+                    MissedBranches = (line.Attribute("mb")?.Value ?? "0").ParseLargeInteger(),
+                    CoveredBranches = (line.Attribute("cb")?.Value ?? "0").ParseLargeInteger()
                 })
                 .OrderBy(seqpnt => seqpnt.LineNumber)
                 .ToArray();
diff --git a/src/ReportGenerator.Core/Parser/LCovParser.cs b/src/ReportGenerator.Core/Parser/LCovParser.cs
index 1587d5b3..0c916353 100644
--- a/src/ReportGenerator.Core/Parser/LCovParser.cs
+++ b/src/ReportGenerator.Core/Parser/LCovParser.cs
@@ -150,7 +150,7 @@ private void ProcessClass(Class @class, string fileName, string[] lines, ref int
                     int lineNumber = int.Parse(tokens[0], CultureInfo.InvariantCulture);
 
                     var branch = new Branch(
-                        "-".Equals(tokens[3]) ? 0 : int.Parse(tokens[3], CultureInfo.InvariantCulture),
+                        "-".Equals(tokens[3]) ? 0 : tokens[3].ParseLargeInteger(),
                         $"{tokens[0]}_{tokens[1]}_{tokens[2]}");
 
                     ICollection<Branch> branches = null;
diff --git a/src/ReportGenerator.Core/Parser/OpenCoverParser.cs b/src/ReportGenerator.Core/Parser/OpenCoverParser.cs
index 4388e7b7..1025a72b 100644
--- a/src/ReportGenerator.Core/Parser/OpenCoverParser.cs
+++ b/src/ReportGenerator.Core/Parser/OpenCoverParser.cs
@@ -467,7 +467,7 @@ private static Dictionary<int, ICollection<Branch>> GetBranches(XElement[] metho
                     branchPoint.Attribute("path").Value,
                     branchPoint.Attribute("offset").Value,
                     branchPoint.Attribute("offsetend").Value);
-                int vc = int.Parse(branchPoint.Attribute("vc").Value, CultureInfo.InvariantCulture);
+                int vc = branchPoint.Attribute("vc").Value.ParseLargeInteger();
 
                 if (result.TryGetValue(lineNumber, out var branches))
                 {
diff --git a/src/ReportGenerator.Core/Parser/VisualStudioParser.cs b/src/ReportGenerator.Core/Parser/VisualStudioParser.cs
index fc96cee8..95a45458 100644
--- a/src/ReportGenerator.Core/Parser/VisualStudioParser.cs
+++ b/src/ReportGenerator.Core/Parser/VisualStudioParser.cs
@@ -5,6 +5,7 @@
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Xml.Linq;
+using Palmmedia.ReportGenerator.Core.Common;
 using Palmmedia.ReportGenerator.Core.Logging;
 using Palmmedia.ReportGenerator.Core.Parser.Analysis;
 using Palmmedia.ReportGenerator.Core.Parser.Filtering;
@@ -251,8 +252,8 @@ private static void SetMethodMetrics(CodeFile codeFile, IEnumerable<XElement> me
 
                 var metrics = new[]
                 {
-                    Metric.BlocksCovered(int.Parse(method.Element("BlocksCovered").Value, CultureInfo.InvariantCulture)),
-                    Metric.BlocksNotCovered(int.Parse(method.Element("BlocksNotCovered").Value, CultureInfo.InvariantCulture))
+                    Metric.BlocksCovered(method.Element("BlocksCovered").Value.ParseLargeInteger()),
+                    Metric.BlocksNotCovered(method.Element("BlocksNotCovered").Value.ParseLargeInteger())
                 };
 
                 var methodMetric = new MethodMetric(fullName, shortName, metrics);