diff --git a/Dalamud/Game/Command/CommandManager.cs b/Dalamud/Game/Command/CommandManager.cs
index 0ebebe83e..fcbfc6655 100644
--- a/Dalamud/Game/Command/CommandManager.cs
+++ b/Dalamud/Game/Command/CommandManager.cs
@@ -71,7 +71,7 @@ internal sealed unsafe class CommandManager : IInternalDisposableService, IComma
             if (separatorPosition + 1 >= content.Length)
             {
                 // Remove the trailing space
-                command = content.Substring(0, separatorPosition);
+                command = content[..separatorPosition];
             }
             else
             {
diff --git a/Dalamud/Interface/Internal/ImGuiInputTextStatePtrExtensions.cs b/Dalamud/Interface/Internal/ImGuiInputTextStatePtrExtensions.cs
index ab5fdaac8..e27c20d06 100644
--- a/Dalamud/Interface/Internal/ImGuiInputTextStatePtrExtensions.cs
+++ b/Dalamud/Interface/Internal/ImGuiInputTextStatePtrExtensions.cs
@@ -110,7 +110,7 @@ internal static unsafe class ImGuiInputTextStatePtrExtensions
 
         var text = new Span<char>(self.TextW.Data, self.TextW.Size);
         if (pos != textLen)
-            text.Slice(pos, textLen - pos).CopyTo(text[(pos + newText.Length)..]);
+            text[pos..textLen].CopyTo(text[(pos + newText.Length)..]);
         newText.CopyTo(text[pos..]);
 
         self.Edited = true;
diff --git a/Dalamud/Interface/Style/StyleModel.cs b/Dalamud/Interface/Style/StyleModel.cs
index 99dba204d..a2d69ce8f 100644
--- a/Dalamud/Interface/Style/StyleModel.cs
+++ b/Dalamud/Interface/Style/StyleModel.cs
@@ -68,7 +68,7 @@ public abstract class StyleModel
     /// <exception cref="ArgumentException">Thrown in case the version of the model is not known.</exception>
     public static StyleModel? Deserialize(string model)
     {
-        var json = Util.DecompressString(Convert.FromBase64String(model.Substring(3)));
+        var json = Util.DecompressString(Convert.FromBase64String(model[3..]));
 
         if (model.StartsWith(StyleModelV1.SerializedPrefix))
             return JsonConvert.DeserializeObject<StyleModelV1>(json);
diff --git a/Dalamud/Plugin/Internal/Loader/ManagedLoadContext.cs b/Dalamud/Plugin/Internal/Loader/ManagedLoadContext.cs
index b6b22d867..fc7c0587d 100644
--- a/Dalamud/Plugin/Internal/Loader/ManagedLoadContext.cs
+++ b/Dalamud/Plugin/Internal/Loader/ManagedLoadContext.cs
@@ -243,7 +243,7 @@ internal class ManagedLoadContext : AssemblyLoadContext
                     }
 
                     // check to see if there is a library entry for the library without the file extension
-                    var trimmedName = unmanagedDllName.Substring(0, unmanagedDllName.Length - suffix.Length);
+                    var trimmedName = unmanagedDllName[..^suffix.Length];
 
                     if (this.nativeLibraries.TryGetValue(prefix + trimmedName, out library))
                     {
diff --git a/Dalamud/Plugin/Internal/Profiles/ProfileModel.cs b/Dalamud/Plugin/Internal/Profiles/ProfileModel.cs
index 87dab7beb..5b8fd593d 100644
--- a/Dalamud/Plugin/Internal/Profiles/ProfileModel.cs
+++ b/Dalamud/Plugin/Internal/Profiles/ProfileModel.cs
@@ -32,7 +32,7 @@ public abstract class ProfileModel
     /// <exception cref="ArgumentException">Thrown when the parsed string is not a valid profile.</exception>
     public static ProfileModel? Deserialize(string model)
     {
-        var json = Util.DecompressString(Convert.FromBase64String(model.Substring(3)));
+        var json = Util.DecompressString(Convert.FromBase64String(model[3..]));
 
         if (model.StartsWith(ProfileModelV1.SerializedPrefix))
             return JsonConvert.DeserializeObject<ProfileModelV1>(json);
diff --git a/Dalamud/SafeMemory.cs b/Dalamud/SafeMemory.cs
index 997352850..bd5ccba07 100644
--- a/Dalamud/SafeMemory.cs
+++ b/Dalamud/SafeMemory.cs
@@ -182,7 +182,7 @@ public static class SafeMemory
             return null;
         var data = encoding.GetString(buffer);
         var eosPos = data.IndexOf('\0');
-        return eosPos == -1 ? data : data.Substring(0, eosPos);
+        return eosPos == -1 ? data : data[..eosPos];
     }
 
     /// <summary>