diff --git a/M6502/M6502.Symbols/File.cs b/M6502/M6502.Symbols/File.cs
index ef035e6..06a5c32 100644
--- a/M6502/M6502.Symbols/File.cs
+++ b/M6502/M6502.Symbols/File.cs
@@ -19,7 +19,7 @@
                     _ = this._integer_keys.Add("mod");
                 }
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.Size = this.TakeInteger("size");
diff --git a/M6502/M6502.Symbols/IdentifiableSection.cs b/M6502/M6502.Symbols/IdentifiableSection.cs
index d792ebe..35333e1 100644
--- a/M6502/M6502.Symbols/IdentifiableSection.cs
+++ b/M6502/M6502.Symbols/IdentifiableSection.cs
@@ -9,7 +9,7 @@
                 public int ID { get; private set; }
                 protected IdentifiableSection() => _ = this._integer_keys.Add("id");
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.ID = this.TakeInteger("id");
diff --git a/M6502/M6502.Symbols/Line.cs b/M6502/M6502.Symbols/Line.cs
index 383bd7e..a4f08ae 100644
--- a/M6502/M6502.Symbols/Line.cs
+++ b/M6502/M6502.Symbols/Line.cs
@@ -24,7 +24,7 @@
                     _ = this._multiple_keys.Add("span");
                 }
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.LineNumber = this.TakeInteger("line");
diff --git a/M6502/M6502.Symbols/NamedSection.cs b/M6502/M6502.Symbols/NamedSection.cs
index a2b5927..d08fea8 100644
--- a/M6502/M6502.Symbols/NamedSection.cs
+++ b/M6502/M6502.Symbols/NamedSection.cs
@@ -10,7 +10,7 @@
 
                 protected NamedSection() => _ = this._string_keys.Add("name");
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.Name = this.TakeString("name");
diff --git a/M6502/M6502.Symbols/Scope.cs b/M6502/M6502.Symbols/Scope.cs
index 921dd95..635b82d 100644
--- a/M6502/M6502.Symbols/Scope.cs
+++ b/M6502/M6502.Symbols/Scope.cs
@@ -42,7 +42,7 @@
                     _ = this._multiple_keys.Add("span");
                 }
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.Size = this.TakeInteger("size");
diff --git a/M6502/M6502.Symbols/Section.cs b/M6502/M6502.Symbols/Section.cs
index 325fc7b..5e30f21 100644
--- a/M6502/M6502.Symbols/Section.cs
+++ b/M6502/M6502.Symbols/Section.cs
@@ -23,7 +23,7 @@
                 protected readonly HashSet<string> _hex_long_keys = [];
                 protected readonly HashSet<string> _multiple_keys = [];
 
-                public virtual void Parse(Parser parent, Dictionary<string, string> entries)
+                public virtual void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     this._parent = parent;
                     foreach (var entry in entries)
diff --git a/M6502/M6502.Symbols/Segment.cs b/M6502/M6502.Symbols/Segment.cs
index edc2d21..36c00b9 100644
--- a/M6502/M6502.Symbols/Segment.cs
+++ b/M6502/M6502.Symbols/Segment.cs
@@ -24,7 +24,7 @@
                     _ = this._integer_keys.Add("ooffs");
                 }
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.Start = this.TakeInteger("start");
diff --git a/M6502/M6502.Symbols/Span.cs b/M6502/M6502.Symbols/Span.cs
index 39ae0d0..53137e1 100644
--- a/M6502/M6502.Symbols/Span.cs
+++ b/M6502/M6502.Symbols/Span.cs
@@ -20,7 +20,7 @@
                     _ = this._integer_keys.Add("type");
                 }
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);
                     this.Start = this.TakeInteger("start");
diff --git a/M6502/M6502.Symbols/Symbol.cs b/M6502/M6502.Symbols/Symbol.cs
index d489022..1b14f20 100644
--- a/M6502/M6502.Symbols/Symbol.cs
+++ b/M6502/M6502.Symbols/Symbol.cs
@@ -37,7 +37,7 @@
                     _ = this._enumeration_keys.Add("type");
                 }
 
-                public override void Parse(Parser parent, Dictionary<string, string> entries)
+                public override void Parse(Parser parent, IDictionary<string, string> entries)
                 {
                     base.Parse(parent, entries);