diff --git a/crates/varcon-parser/src/lib.rs b/crates/varcon-parser/src/lib.rs
index eedf136..76c341d 100644
--- a/crates/varcon-parser/src/lib.rs
+++ b/crates/varcon-parser/src/lib.rs
@@ -2,7 +2,7 @@ mod parser;
 
 pub use parser::ClusterIter;
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Cluster {
     pub header: Option<String>,
     pub entries: Vec<Entry>,
@@ -17,7 +17,7 @@ impl Cluster {
     }
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Entry {
     pub variants: Vec<Variant>,
     pub pos: Option<Pos>,
@@ -66,13 +66,13 @@ fn imply(variants: &mut Vec<Variant>, required: Category, missing: Category) {
     }
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Variant {
     pub types: Vec<Type>,
     pub word: String,
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Type {
     pub category: Category,
     pub tag: Option<Tag>,
@@ -89,7 +89,7 @@ pub enum Category {
     Other,
 }
 
-#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord, Debug)]
 pub enum Tag {
     Eq,
     Variant,
diff --git a/crates/varcon/src/lib.rs b/crates/varcon/src/lib.rs
index fdff445..bb4be6b 100644
--- a/crates/varcon/src/lib.rs
+++ b/crates/varcon/src/lib.rs
@@ -2,14 +2,14 @@ mod codegen;
 
 pub use codegen::*;
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Cluster {
     pub header: Option<&'static str>,
     pub entries: &'static [Entry],
     pub notes: &'static [&'static str],
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Entry {
     pub variants: &'static [Variant],
     pub pos: Option<Pos>,
@@ -19,13 +19,13 @@ pub struct Entry {
     pub comment: Option<&'static str>,
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Variant {
     pub types: &'static [Type],
     pub word: &'static str,
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Type {
     pub category: Category,
     pub tag: Option<Tag>,