diff --git a/Dapper/DefaultTypeMap.cs b/Dapper/DefaultTypeMap.cs
index 2e3423485..c936cce3f 100644
--- a/Dapper/DefaultTypeMap.cs
+++ b/Dapper/DefaultTypeMap.cs
@@ -97,7 +97,7 @@ private static FieldInfo[] GetSettableFields(Type t)
                     if (types[i] == typeof(byte[]) && ctorParameters[i].ParameterType.FullName == SqlMapper.LinqBinary)
                         continue;
                     var unboxedType = Nullable.GetUnderlyingType(ctorParameters[i].ParameterType) ?? ctorParameters[i].ParameterType;
-                    if ((unboxedType != types[i] && !SqlMapper.HasTypeHandler(unboxedType))
+                    if ((unboxedType != types[i] && !SqlMapper.HasTypeHandler(unboxedType) && !SqlMapper.IsNumericConversion(types[i], unboxedType))
                         && !(unboxedType.IsEnum && Enum.GetUnderlyingType(unboxedType) == types[i])
                         && !(unboxedType == typeof(char) && types[i] == typeof(string))
                         && !(unboxedType.IsEnum && types[i] == typeof(string)))
diff --git a/Dapper/SqlMapper.cs b/Dapper/SqlMapper.cs
index 8f3956cab..95e4b96dd 100644
--- a/Dapper/SqlMapper.cs
+++ b/Dapper/SqlMapper.cs
@@ -3220,6 +3220,22 @@ internal static bool IsDateTimeFamilyConversion(Type from, Type to)
             => false;
 #endif
 
+        internal static bool IsNumericConversion(Type from, Type to)
+        {
+            static bool IsNumericOrBoolean(Type type)
+            {
+                return Type.GetTypeCode(type) switch
+                {
+                    TypeCode.Boolean or TypeCode.Byte or TypeCode.SByte or TypeCode.Int16 or TypeCode.UInt16
+                        or TypeCode.Int32 or TypeCode.UInt32 or TypeCode.Int64 or TypeCode.UInt64
+                        or TypeCode.Single or TypeCode.Double => true,
+                    _ => false,
+                };
+            }
+
+            return IsNumericOrBoolean(from) && IsNumericOrBoolean(to);
+        }
+
         internal static bool TryConvertDateTimeFamily(object? value, Type to, [NotNullWhen(true)] out object? converted)
         {
 #if NET6_0_OR_GREATER
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 2f91a3cca..b1e42ba41 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -38,6 +38,7 @@
     <PackageVersion Include="RepoDb.SqlServer" Version="1.13.1" />
     <PackageVersion Include="ServiceStack.OrmLite.SqlServer" Version="10.0.6" />
     <PackageVersion Include="Snowflake.Data" Version="5.5.0" />
+    <PackageVersion Include="pengdows.crud.fakeDb" Version="2.0.5" />
     <PackageVersion Include="SqlMarshal" Version="0.5.0" />
     <PackageVersion Include="SubSonic" Version="3.0.0.4" />
     <PackageVersion Include="Susanoo.SqlServer" Version="1.2.4.2" />
diff --git a/tests/Dapper.Tests/Dapper.Tests.csproj b/tests/Dapper.Tests/Dapper.Tests.csproj
index 93b498618..e9eab6b88 100644
--- a/tests/Dapper.Tests/Dapper.Tests.csproj
+++ b/tests/Dapper.Tests/Dapper.Tests.csproj
@@ -32,6 +32,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' != 'net481'">
+    <PackageReference Include="pengdows.crud.fakeDb" />
     <PackageReference Include="Npgsql" />
     <PackageReference Include="Snowflake.Data" />
   </ItemGroup>
diff --git a/tests/Dapper.Tests/FakeDbTests.Issue1966.cs b/tests/Dapper.Tests/FakeDbTests.Issue1966.cs
new file mode 100644
index 000000000..ce65a6832
--- /dev/null
+++ b/tests/Dapper.Tests/FakeDbTests.Issue1966.cs
@@ -0,0 +1,27 @@
+#if !NET481
+using System.Collections.Generic;
+using pengdows.crud.fakeDb;
+using Xunit;
+
+namespace Dapper.Tests;
+
+public sealed class FakeDbIssue1966Tests
+{
+    [Fact]
+    public void ConstructorMappingConvertsNumericColumnToBoolean()
+    {
+        using var connection = new fakeDbConnection(new FakeDataStore());
+        connection.EnqueueReaderResult(new[]
+        {
+            new Dictionary<string, object?> { ["B"] = 1 },
+        });
+        connection.Open();
+
+        var result = connection.QuerySingle<InConstructor>("select 1 as B");
+
+        Assert.True(result.B);
+    }
+
+    private sealed record InConstructor(bool B);
+}
+#endif