diff --git a/src/comments_docsource.rs b/src/comments_docsource.rs
index 3d31347..9146c26 100644
--- a/src/comments_docsource.rs
+++ b/src/comments_docsource.rs
@@ -174,12 +174,19 @@ impl DocSource for CommentsDatabase {
     fn update(&mut self) -> Result<bool, Errors> {
         let files = find_nix_files(get_nixpkgs_root())
             .par_iter()
-            .map(|f| {
-                let content = std::fs::read_to_string(f.path()).unwrap();
-                let mut hasher = crc32fast::Hasher::new();
-                hasher.update(content.as_bytes());
-                let hash = hasher.finalize();
-                (hash, f.path().to_path_buf(), content)
+            .filter_map(|f| {
+                match std::fs::read_to_string(f.path()) {
+                    Ok(content) => {
+                        let mut hasher = crc32fast::Hasher::new();
+                        hasher.update(content.as_bytes());
+                        let hash = hasher.finalize();
+                        Some ((hash, f.path().to_path_buf(), content))
+                    },
+                    Err(_) => {
+                        eprintln!("Skipped {}", f.path().to_str()?);
+                        None
+                    },
+                }
             })
             .collect::<Vec<(u32, PathBuf, String)>>();