diff --git a/src/api/mod.rs b/src/api/mod.rs
index 5222b12f98..d297702934 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -466,6 +466,7 @@ impl<'a> AuthenticatedApi<'a> {
 
     /// Lists release files for the given `release`, filtered by a set of checksums.
     /// When empty checksums list is provided, fetches all possible artifacts.
+    #[deprecated]
     pub fn list_release_files_by_checksum(
         &self,
         org: &str,
@@ -525,6 +526,7 @@ impl<'a> AuthenticatedApi<'a> {
     }
 
     /// Lists all the release files for the given `release`.
+    #[deprecated]
     pub fn list_release_files(
         &self,
         org: &str,
@@ -535,6 +537,7 @@ impl<'a> AuthenticatedApi<'a> {
     }
 
     /// Get a single release file and store it inside provided descriptor.
+    #[deprecated]
     pub fn get_release_file(
         &self,
         org: &str,
@@ -569,6 +572,7 @@ impl<'a> AuthenticatedApi<'a> {
     }
 
     /// Get a single release file metadata.
+    #[deprecated]
     pub fn get_release_file_metadata(
         &self,
         org: &str,
@@ -603,6 +607,7 @@ impl<'a> AuthenticatedApi<'a> {
 
     /// Deletes a single release file.  Returns `true` if the file was
     /// deleted or `false` otherwise.
+    #[deprecated]
     pub fn delete_release_file(
         &self,
         org: &str,
@@ -637,6 +642,7 @@ impl<'a> AuthenticatedApi<'a> {
 
     /// Deletes all release files.  Returns `true` if files were
     /// deleted or `false` otherwise.
+    #[deprecated]
     pub fn delete_release_files(
         &self,
         org: &str,
@@ -1423,6 +1429,7 @@ impl RegionSpecificApi<'_> {
 
     /// Uploads a new release file.  The file is loaded directly from the file
     /// system and uploaded as `name`.
+    #[deprecated]
     pub fn upload_release_file(
         &self,
         context: &UploadContext,
diff --git a/src/commands/files/delete.rs b/src/commands/files/delete.rs
index 68ed9ba1e2..ebdca8f094 100644
--- a/src/commands/files/delete.rs
+++ b/src/commands/files/delete.rs
@@ -27,6 +27,7 @@ pub fn make_command(command: Command) -> Command {
         )
 }
 
+#[deprecated]
 pub fn execute(matches: &ArgMatches) -> Result<()> {
     let config = Config::current();
     let release = config.get_release_with_legacy_fallback(matches)?;
diff --git a/src/commands/files/list.rs b/src/commands/files/list.rs
index 696c6cdf80..d1d7cd1ff0 100644
--- a/src/commands/files/list.rs
+++ b/src/commands/files/list.rs
@@ -11,6 +11,7 @@ pub fn make_command(command: Command) -> Command {
         .arg(Arg::new("version").long("version").hide(true))
 }
 
+#[deprecated]
 pub fn execute(matches: &ArgMatches) -> Result<()> {
     let config = Config::current();
     let release = config.get_release_with_legacy_fallback(matches)?;
diff --git a/src/commands/files/upload.rs b/src/commands/files/upload.rs
index c43729bb60..14b6682f6b 100644
--- a/src/commands/files/upload.rs
+++ b/src/commands/files/upload.rs
@@ -123,6 +123,7 @@ pub fn make_command(command: Command) -> Command {
         )
 }
 
+#[deprecated]
 pub fn execute(matches: &ArgMatches) -> Result<()> {
     let config = Config::current();
     let release = config.get_release_with_legacy_fallback(matches)?;
diff --git a/src/commands/sourcemaps/explain.rs b/src/commands/sourcemaps/explain.rs
index aeeebb6b48..df56e01935 100644
--- a/src/commands/sourcemaps/explain.rs
+++ b/src/commands/sourcemaps/explain.rs
@@ -123,6 +123,7 @@ fn extract_nth_frame(stacktrace: &Stacktrace, position: usize) -> Result<&Frame>
     Ok(frame)
 }
 
+#[deprecated]
 fn fetch_release_artifacts(org: &str, project: &str, release: &str) -> Result<Vec<Artifact>> {
     Api::current().authenticated()?.list_release_files(org, Some(project), release).map(|artifacts| {
         if artifacts.is_empty() {
@@ -181,6 +182,7 @@ fn verify_dists_matches(artifact: &Artifact, dist: Option<&str>) -> Result<()> {
     Ok(())
 }
 
+#[deprecated]
 fn fetch_release_artifact_file(
     org: &str,
     project: &str,
@@ -215,6 +217,7 @@ fn fetch_release_artifact_file(
         })?
 }
 
+#[deprecated]
 fn fetch_release_artifact_file_metadata(
     org: &str,
     project: &str,
@@ -368,6 +371,7 @@ fn unify_artifact_url(abs_path: &str) -> Result<String> {
     Ok(filename)
 }
 
+#[deprecated]
 pub fn execute(matches: &ArgMatches) -> Result<()> {
     let config = Config::current();
     warning("DEPRECATION: `sourcemaps explain` has drifted from how sourcemap processing actually operates \
diff --git a/src/utils/file_upload.rs b/src/utils/file_upload.rs
index ae5f01715b..5794fc63a3 100644
--- a/src/utils/file_upload.rs
+++ b/src/utils/file_upload.rs
@@ -223,6 +223,7 @@ impl<'a> FileUpload<'a> {
     }
 }
 
+#[deprecated]
 fn upload_files_parallel(
     context: &UploadContext,
     files: &SourceFiles,
diff --git a/src/utils/sourcemaps.rs b/src/utils/sourcemaps.rs
index 7b478d517b..d4a5b0996a 100644
--- a/src/utils/sourcemaps.rs
+++ b/src/utils/sourcemaps.rs
@@ -766,6 +766,7 @@ impl SourceMapProcessor {
 
     /// Flags the collected sources whether they have already been uploaded before
     /// (based on their checksum), and returns the number of files that *do* need an upload.
+    #[deprecated]
     fn flag_uploaded_sources(&mut self, context: &UploadContext<'_>) -> usize {
         let mut files_needing_upload = self.sources.len();