diff --git a/registry/src/endpoints/publish_version.rs b/registry/src/endpoints/publish_version.rs
index 766f1ef..b9b31ae 100644
--- a/registry/src/endpoints/publish_version.rs
+++ b/registry/src/endpoints/publish_version.rs
@@ -19,7 +19,7 @@ use pesde::{
 		pesde::{DocEntry, DocEntryKind, IndexFileEntry, ScopeInfo, SCOPE_INFO_FILE},
 		specifiers::DependencySpecifiers,
 		traits::RefreshOptions,
-		IGNORED_DIRS, IGNORED_FILES,
+		ADDITIONAL_FORBIDDEN_FILES, IGNORED_DIRS, IGNORED_FILES,
 	},
 	MANIFEST_FILE_NAME,
 };
@@ -35,8 +35,6 @@ use tokio::{
 	task::JoinSet,
 };
 
-const ADDITIONAL_FORBIDDEN_FILES: &[&str] = &["default.project.json"];
-
 #[derive(Debug, Deserialize, Default)]
 struct DocEntryInfo {
 	#[serde(default)]
diff --git a/src/cli/commands/publish.rs b/src/cli/commands/publish.rs
index 3c879e0..b2f1ffc 100644
--- a/src/cli/commands/publish.rs
+++ b/src/cli/commands/publish.rs
@@ -20,7 +20,7 @@ use pesde::{
 			specifier::{VersionType, VersionTypeOrReq},
 			WorkspacePackageSource,
 		},
-		PackageSources, IGNORED_DIRS, IGNORED_FILES,
+		PackageSources, ADDITIONAL_FORBIDDEN_FILES, IGNORED_DIRS, IGNORED_FILES,
 	},
 	Project, RefreshedSources, DEFAULT_INDEX_NAME, MANIFEST_FILE_NAME,
 };
@@ -239,15 +239,24 @@ impl PublishCommand {
 		}
 
 		for path in &paths {
-			if path
-				.file_name()
-				.is_some_and(|n| n == "default.project.json")
-			{
-				anyhow::bail!(
-                    "default.project.json was included at `{}`, this should be generated by the {} script upon dependants installation",
-                    path.display(),
-                    ScriptName::RobloxSyncConfigGenerator
-                );
+			let Some(file_name) = path.file_name() else {
+				continue;
+			};
+
+			if ADDITIONAL_FORBIDDEN_FILES.contains(&file_name.to_string_lossy().as_ref()) {
+				if file_name == "default.project.json" {
+					anyhow::bail!(
+						"default.project.json was included at `{}`, this should be generated by the {} script upon dependants installation",
+						path.display(),
+						ScriptName::RobloxSyncConfigGenerator
+					);
+				} else {
+					anyhow::bail!(
+						"forbidden file {} was included at `{}`",
+						file_name.to_string_lossy(),
+						path.display()
+					);
+				}
 			}
 		}
 
diff --git a/src/source/fs.rs b/src/source/fs.rs
index 5240f64..9608638 100644
--- a/src/source/fs.rs
+++ b/src/source/fs.rs
@@ -1,6 +1,6 @@
 use crate::{
 	manifest::target::TargetKind,
-	source::{IGNORED_DIRS, IGNORED_FILES},
+	source::{ADDITIONAL_FORBIDDEN_FILES, IGNORED_DIRS, IGNORED_FILES},
 };
 use fs_err::tokio as fs;
 use relative_path::RelativePathBuf;
@@ -209,7 +209,7 @@ async fn package_fs_copy(
 			continue;
 		}
 
-		if IGNORED_FILES.contains(&file_name) {
+		if IGNORED_FILES.contains(&file_name) || ADDITIONAL_FORBIDDEN_FILES.contains(&file_name) {
 			continue;
 		}
 
diff --git a/src/source/git/mod.rs b/src/source/git/mod.rs
index 7ef8622..acf8fbd 100644
--- a/src/source/git/mod.rs
+++ b/src/source/git/mod.rs
@@ -9,7 +9,8 @@ use crate::{
 		git_index::{read_file, GitBasedSource},
 		specifiers::DependencySpecifiers,
 		traits::{DownloadOptions, GetTargetOptions, PackageRef, RefreshOptions, ResolveOptions},
-		PackageSource, ResolveResult, VersionId, IGNORED_DIRS, IGNORED_FILES,
+		PackageSource, ResolveResult, VersionId, ADDITIONAL_FORBIDDEN_FILES, IGNORED_DIRS,
+		IGNORED_FILES,
 	},
 	util::hash,
 	Project, DEFAULT_INDEX_NAME, LOCKFILE_FILE_NAME, MANIFEST_FILE_NAME,
@@ -447,9 +448,9 @@ impl PackageSource for GitPackageSource {
 					return false;
 				}
 
-				if pkg_ref.use_new_structure() && name == "default.project.json" {
+				if pkg_ref.use_new_structure() && ADDITIONAL_FORBIDDEN_FILES.contains(&name) {
 					tracing::debug!(
-						"removing default.project.json from {}#{} at {path} - using new structure",
+						"removing {name} from {}#{} at {path} - using new structure",
 						pkg_ref.repo,
 						pkg_ref.tree_id
 					);
diff --git a/src/source/mod.rs b/src/source/mod.rs
index 875f594..6c3df03 100644
--- a/src/source/mod.rs
+++ b/src/source/mod.rs
@@ -36,6 +36,9 @@ pub mod workspace;
 /// Files that will not be stored when downloading a package. These are only files which break pesde's functionality, or are meaningless and possibly heavy (e.g. `.DS_Store`)
 pub const IGNORED_FILES: &[&str] = &["foreman.toml", "aftman.toml", "rokit.toml", ".DS_Store"];
 
+/// Files that should be ignored in some contexts, usually only pesde packages
+pub const ADDITIONAL_FORBIDDEN_FILES: &[&str] = &["default.project.json"];
+
 /// Directories that will not be stored when downloading a package. These are only directories which break pesde's functionality, or are meaningless and possibly heavy
 pub const IGNORED_DIRS: &[&str] = &[".git"];