diff --git a/src/compression.rs b/src/compression.rs
index 29dbb64c..927fc9e1 100644
--- a/src/compression.rs
+++ b/src/compression.rs
@@ -1,7 +1,7 @@
 //! Possible ZIP compression methods.
 
 /// Compression methods for the contents of a ZIP file.
-#[derive(Copy, Clone, PartialEq)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 pub enum CompressionMethod
 {
     /// The file is stored (no compression)
diff --git a/src/read.rs b/src/read.rs
index 57641abd..24e2a154 100644
--- a/src/read.rs
+++ b/src/read.rs
@@ -48,6 +48,7 @@ mod ffi {
 ///
 /// println!("Result: {:?}", doit());
 /// ```
+#[derive(Debug)]
 pub struct ZipArchive<R: Read + io::Seek>
 {
     reader: R,
diff --git a/src/types.rs b/src/types.rs
index 61578dc4..f0c2203a 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -3,7 +3,7 @@
 use time;
 
 
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug)]
 pub enum System
 {
     Dos,
@@ -29,6 +29,7 @@ impl System {
 pub const DEFAULT_VERSION: u8 = 20;
 
 /// Structure representing a ZIP file.
+#[derive(Debug)]
 pub struct ZipFileData
 {
     /// Compatibility of the file attribute information