diff --git a/Cargo.lock b/Cargo.lock
index 0d757cb8..e35de384 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -30,9 +30,9 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "base64"
-version = "0.13.0"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
 [[package]]
 name = "bitflags"
@@ -69,9 +69,9 @@ checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
 
 [[package]]
 name = "cc"
-version = "1.0.73"
+version = "1.0.76"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+checksum = "76a284da2e6fe2092f2353e51713435363112dfd60030e22add80be333fb928f"
 
 [[package]]
 name = "cfg-if"
@@ -81,9 +81,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "3.2.22"
+version = "3.2.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86447ad904c7fb335a790c9d7fe3d0d971dc523b8ccd1561a520de9a85302750"
+checksum = "71655c45cb9845d3270c9d6df84ebe72b4dad3c2ba3f7023ad47c144e4e473a5"
 dependencies = [
  "atty",
  "bitflags",
@@ -98,13 +98,13 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.0.15"
+version = "4.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bf8832993da70a4c6d13c581f4463c2bdda27b9bf1c5498dc4365543abe6d6f"
+checksum = "91b9970d7505127a162fdaa9b96428d28a479ba78c9ec7550a63a5d9863db682"
 dependencies = [
  "atty",
  "bitflags",
- "clap_derive 4.0.13",
+ "clap_derive 4.0.21",
  "clap_lex 0.3.0",
  "once_cell",
  "strsim",
@@ -126,9 +126,9 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.0.13"
+version = "4.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c42f169caba89a7d512b5418b09864543eeb4d497416c917d7137863bd2076ad"
+checksum = "0177313f9f02afc995627906bbd8967e2be069f5261954222dac78290c2b9014"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -347,9 +347,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.14"
+version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ca32592cf21ac7ccab1825cd87f6c9b3d9022c44d086172ed0966bec8af30be"
+checksum = "5f9f29bc9dda355256b2916cf526ab02ce0aeaaaf2bad60d65ef3f12f11dd0f4"
 dependencies = [
  "bytes",
  "fnv",
@@ -431,7 +431,7 @@ version = "0.1.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e0581f8e42136b54e77d3180b6c871486ad2a2dca5e394daaa38fa3190dd00c9"
 dependencies = [
- "clap 3.2.22",
+ "clap 3.2.23",
  "highlight_error",
  "instant",
  "itertools",
@@ -444,9 +444,9 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.14.20"
+version = "0.14.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02c929dc5c39e335a03c405292728118860721b10190d98c2a0f0efd5baafbac"
+checksum = "034711faac9d2166cb1baf1a2fb0b60b1f277f8492fd72176c17f3515e1abd3c"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -553,9 +553,9 @@ dependencies = [
 
 [[package]]
 name = "ipnet"
-version = "2.5.0"
+version = "2.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "879d54834c8c76457ef4293a689b2a8c59b076067ad77b15efafbb05f92a592b"
+checksum = "f88c5561171189e69df9d98bcf18fd5f9558300f7ea7b801eb8a0fd748bd8745"
 
 [[package]]
 name = "itertools"
@@ -597,7 +597,7 @@ dependencies = [
 name = "kind-cli"
 version = "0.3.0"
 dependencies = [
- "clap 4.0.15",
+ "clap 4.0.22",
  "kind-checker",
  "kind-driver",
  "kind-report",
@@ -720,9 +720,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.135"
+version = "0.2.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68783febc7782c6c5cb401fbda4de5a9898be1762314da0bb2c10ced61f18b0c"
+checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
 
 [[package]]
 name = "linked-hash-map"
@@ -763,21 +763,21 @@ checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
 [[package]]
 name = "mio"
-version = "0.8.4"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57ee1c23c7c63b0c9250c339ffdc69255f110b298b901b9f6c82547b7b87caaf"
+checksum = "e5d732bc30207a6423068df043e3d02e0735b155ad7ce1a6f76fe2baa5b158de"
 dependencies = [
  "libc",
  "log",
  "wasi",
- "windows-sys 0.36.1",
+ "windows-sys 0.42.0",
 ]
 
 [[package]]
 name = "native-tls"
-version = "0.2.10"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd7e2f3618557f980e0b17e8856252eee3c97fa12c54dff0ca290fb6266ca4a9"
+checksum = "07226173c32f2926027b63cce4bcd8076c3552846cbe7925f3aaffeac0a3b92e"
 dependencies = [
  "lazy_static",
  "libc",
@@ -821,9 +821,9 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "1.13.1"
+version = "1.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
+checksum = "f6058e64324c71e02bc2b150e4f3bc8286db6c83092132ffa3f6b1eab0f9def5"
 dependencies = [
  "hermit-abi",
  "libc",
@@ -831,9 +831,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.15.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e82dad04139b71a90c080c8463fe0dc7902db5192d939bd0950f074d014339e1"
+checksum = "86f0b0d4bf799edbc74508c1e8bf170ff5f41238e5f8225603ca7caaae2b7860"
 
 [[package]]
 name = "openssl"
@@ -869,9 +869,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.76"
+version = "0.9.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5230151e44c0f05157effb743e8d517472843121cf9243e8b81393edb5acd9ce"
+checksum = "b03b84c3b2d099b81f0953422b4d4ad58761589d0229b5506356afca05a3670a"
 dependencies = [
  "autocfg",
  "cc",
@@ -882,9 +882,9 @@ dependencies = [
 
 [[package]]
 name = "os_str_bytes"
-version = "6.3.0"
+version = "6.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"
+checksum = "3baf96e39c5359d2eb0dd6ccb42c62b91d9678aa68160d261b9e0ccbf9e9dea9"
 
 [[package]]
 name = "parking_lot_core"
@@ -919,9 +919,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.25"
+version = "0.3.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
+checksum = "6ac9a59f73473f1b8d852421e59e64809f025994837ef743615c6d0c5b305160"
 
 [[package]]
 name = "proc-macro-error"
@@ -949,9 +949,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.46"
+version = "1.0.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94e2ef8dbfc347b10c094890f778ee2e36ca9bb4262e86dc99cd217e35f3470b"
+checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
 dependencies = [
  "unicode-ident",
 ]
@@ -991,9 +991,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.6.0"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
+checksum = "e076559ef8e241f2ae3479e36f97bd5741c0330689e217ad51ce2c76808b868a"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1002,9 +1002,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.27"
+version = "0.6.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"
+checksum = "456c603be3e8d448b072f410900c09faf164fbce2d480456f50eea6e25f9c848"
 
 [[package]]
 name = "remove_dir_all"
@@ -1108,9 +1108,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.145"
+version = "1.0.147"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "728eb6351430bccb993660dfffc5a72f91ccc1295abaa8ce19b27ebe4f75568b"
+checksum = "d193d69bae983fc11a79df82342761dfbf28a99fc8d203dca4c3c1b590948965"
 
 [[package]]
 name = "serde_json"
@@ -1178,9 +1178,9 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "syn"
-version = "1.0.102"
+version = "1.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fcd952facd492f9be3ef0d0b7032a6e442ee9b361d4acc2b1d0c4aaa5f613a1"
+checksum = "a864042229133ada95abf3b54fdc62ef5ccabe9515b64717bcb9a1919e59445d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1212,9 +1212,9 @@ dependencies = [
 
 [[package]]
 name = "textwrap"
-version = "0.15.1"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "949517c0cf1bf4ee812e2e07e08ab448e3ae0d23472aee8a06c985f0c8815b16"
+checksum = "222a222a5bfe1bba4a77b45ec488a741b3cb8872e5e499451fd7d0129c9c7c3d"
 
 [[package]]
 name = "tinyvec"
diff --git a/src/kind-checker/src/compiler/mod.rs b/src/kind-checker/src/compiler/mod.rs
index e13452aa..483f3585 100644
--- a/src/kind-checker/src/compiler/mod.rs
+++ b/src/kind-checker/src/compiler/mod.rs
@@ -132,7 +132,8 @@ fn codegen_all_expr(
 
     match &expr.data {
         Typ => mk_quoted_ctr(eval_ctr(quote, TermTag::Typ), vec![span_to_num(expr.span)]),
-        U60 => mk_quoted_ctr(eval_ctr(quote, TermTag::U60), vec![span_to_num(expr.span)]),
+        NumType(desugared::NumType::U60) => mk_quoted_ctr(eval_ctr(quote, TermTag::U60), vec![span_to_num(expr.span)]),
+        NumType(desugared::NumType::U120) => todo!(),
         Var(ident) => {
             if quote && !lhs {
                 set_origin(ident)
@@ -240,10 +241,11 @@ fn codegen_all_expr(
                 codegen_all_expr(lhs_rule, lhs, num, quote, expr),
             ],
         ),
-        Num(n) => mk_quoted_ctr(
+        Num(desugared::Num::U60(n)) => mk_quoted_ctr(
             eval_ctr(quote, TermTag::Num),
             vec![span_to_num(expr.span), mk_u60(*n)],
         ),
+        Num(desugared::Num::U120(n)) => todo!(),
         Binary(operator, left, right) => mk_quoted_ctr(
             eval_ctr(quote, TermTag::Binary),
             vec![
diff --git a/src/kind-checker/src/report.rs b/src/kind-checker/src/report.rs
index 50ec5041..13c8b17e 100644
--- a/src/kind-checker/src/report.rs
+++ b/src/kind-checker/src/report.rs
@@ -149,7 +149,7 @@ fn parse_all_expr(
             )),
             "Kind.Quoted.hlp" => Ok(Expr::hlp(parse_orig(&args[0])?, Ident::generate("?"))),
             "Kind.Quoted.u60" => Ok(Expr::u60(parse_orig(&args[0])?)),
-            "Kind.Quoted.num" => Ok(Expr::num(parse_orig(&args[0])?, parse_num(&args[1])?)),
+            "Kind.Quoted.num" => Ok(Expr::num60(parse_orig(&args[0])?, parse_num(&args[1])?)),   // TODO: do something about u120?
             "Kind.Quoted.op2" => Ok(Expr::binary(
                 parse_orig(&args[0])?,
                 parse_op(&args[1])?,
diff --git a/src/kind-pass/src/desugar/expr.rs b/src/kind-pass/src/desugar/expr.rs
index 3a1c6017..1b48ac1a 100644
--- a/src/kind-pass/src/desugar/expr.rs
+++ b/src/kind-pass/src/desugar/expr.rs
@@ -17,7 +17,8 @@ impl<'a> DesugarState<'a> {
             Literal::Type => desugared::Expr::typ(range),
             Literal::Help(name) => desugared::Expr::hlp(range, name.clone()),
             Literal::U60 => desugared::Expr::u60(range),
-            Literal::Number(num) => desugared::Expr::num(range, *num),
+            // TODO: Add u120 literals
+            Literal::Number(num) => desugared::Expr::num60(range, *num),
             Literal::String(string) => desugared::Expr::str(range, string.to_owned()),
             Literal::Char(_) => todo!(),
         }
diff --git a/src/kind-pass/src/desugar/top_level.rs b/src/kind-pass/src/desugar/top_level.rs
index e7f58750..375c9e73 100644
--- a/src/kind-pass/src/desugar/top_level.rs
+++ b/src/kind-pass/src/desugar/top_level.rs
@@ -304,7 +304,8 @@ impl<'a> DesugarState<'a> {
                 desugared::Expr::var(name)
             }
             concrete::pat::PatKind::Var(ident) => desugared::Expr::var(ident.0.clone()),
-            concrete::pat::PatKind::Num(n) => desugared::Expr::num(pat.range, *n),
+            // TODO: Add u120 pattern literals
+            concrete::pat::PatKind::Num(n) => desugared::Expr::num60(pat.range, *n),
             concrete::pat::PatKind::Pair(fst, snd) => self.desugar_pair_pat(pat.range, fst, snd),
             concrete::pat::PatKind::List(ls) => self.desugar_list_pat(pat.range, ls),
             concrete::pat::PatKind::Str(string) => {
diff --git a/src/kind-pass/src/erasure/mod.rs b/src/kind-pass/src/erasure/mod.rs
index 16ea374d..7ec437a5 100644
--- a/src/kind-pass/src/erasure/mod.rs
+++ b/src/kind-pass/src/erasure/mod.rs
@@ -255,7 +255,7 @@ impl<'a> ErasureState<'a> {
         use kind_tree::desugared::ExprKind::*;
 
         match &expr.data {
-            Typ | U60 | Num(_) | Str(_) | Err => Box::new(expr.clone()),
+            Typ | NumType(_) | Num(_) | Str(_) | Err => Box::new(expr.clone()),
             Hole(_) | Hlp(_) => match &expr.span {
                 kind_span::Span::Generated => Box::new(expr.clone()),
                 kind_span::Span::Locatable(span) => {
diff --git a/src/kind-target-hvm/src/lib.rs b/src/kind-target-hvm/src/lib.rs
index 6c0e0fa8..577413eb 100644
--- a/src/kind-target-hvm/src/lib.rs
+++ b/src/kind-target-hvm/src/lib.rs
@@ -30,14 +30,16 @@ pub fn compile_term(expr: &desugared::Expr) -> Box<Term> {
         }),
         Ann(left, _) => compile_term(left),
         Sub(_, _, _, expr) => compile_term(expr),
-        Num(numb) => Box::new(Term::Num { numb: *numb }),
+        Num(desugared::Num::U60(numb)) => Box::new(Term::Num { numb: *numb }),
+        Num(_) => todo!(),
         Binary(op, l, r) => Box::new(Term::Ctr {
             name: op.to_string(),
             args: vec![compile_term(l), compile_term(r)],
         }),
         Hole(_) => unreachable!("Internal Error: 'Hole' cannot be a relevant term"),
         Typ => unreachable!("Internal Error: 'Typ' cannot be a relevant term"),
-        U60 => unreachable!("Internal Error: 'U60' cannot be a relevant term"),
+        NumType(desugared::NumType::U60) => unreachable!("Internal Error: 'U60' cannot be a relevant term"),
+        NumType(desugared::NumType::U120) => unreachable!("Internal Error: 'U120' cannot be a relevant term"),
         All(_, _, _) => unreachable!("Internal Error: 'All' cannot be a relevant term"),
         Str(_) => unreachable!("Internal Error: 'Str' cannot be a relevant term"),
         Hlp(_) => unreachable!("Internal Error: 'Hlp' cannot be a relevant term"),
diff --git a/src/kind-tree/src/desugared/mod.rs b/src/kind-tree/src/desugared/mod.rs
index 82d2d0c3..bb649cbe 100644
--- a/src/kind-tree/src/desugared/mod.rs
+++ b/src/kind-tree/src/desugared/mod.rs
@@ -39,10 +39,10 @@ pub enum ExprKind {
     Sub(Ident, usize, usize, Box<Expr>),
     /// Type Literal
     Typ,
-    ///  U60 Type
-    U60,
-    /// Number literal
-    Num(u64),
+    /// Primitive numeric types
+    NumType(NumType),
+    /// Primitive numeric values
+    Num(Num),
     /// Very special constructor :)
     Str(String),
     /// Binary operation (e.g. 2 + 3)
@@ -158,14 +158,28 @@ impl Expr {
     pub fn u60(range: Range) -> Box<Expr> {
         Box::new(Expr {
             span: Span::Locatable(range),
-            data: ExprKind::U60,
+            data: ExprKind::NumType(NumType::U60),
         })
     }
 
-    pub fn num(range: Range, num: u64) -> Box<Expr> {
+    pub fn u120(range: Range) -> Box<Expr> {
         Box::new(Expr {
             span: Span::Locatable(range),
-            data: ExprKind::Num(num),
+            data: ExprKind::NumType(NumType::U120),
+        })
+    }
+
+    pub fn num60(range: Range, num: u64) -> Box<Expr> {
+        Box::new(Expr {
+            span: Span::Locatable(range),
+            data: ExprKind::Num(Num::U60(num)),
+        })
+    }
+
+    pub fn num120(range: Range, num: u128) -> Box<Expr> {
+        Box::new(Expr {
+            span: Span::Locatable(range),
+            data: ExprKind::Num(Num::U120(num)),
         })
     }
 
@@ -205,6 +219,18 @@ impl Expr {
     }
 }
 
+#[derive(Clone, Debug, Hash, PartialEq, Eq)]
+pub enum Num {
+    U60(u64),
+    U120(u128),
+}
+
+#[derive(Clone, Debug, Hash, PartialEq, Eq)]
+pub enum NumType {
+    U60,
+    U120
+}
+
 /// An argument is a 'binding' of a name to a type
 /// it has some other options like
 /// eras: that express the erasure of this type when
@@ -285,9 +311,11 @@ impl Display for Expr {
         use ExprKind::*;
         match &self.data {
             Typ => write!(f, "Type"),
-            U60 => write!(f, "U60"),
+            NumType(self::NumType::U60) => write!(f, "U60"),
+            NumType(self::NumType::U120) => write!(f, "U120"),
             Str(n) => write!(f, "\"{}\"", n),
-            Num(n) => write!(f, "{}", n),
+            Num(self::Num::U60(n)) => write!(f, "{}", n),
+            Num(self::Num::U120(n)) => write!(f, "{}u120", n),
             All(_, _, _) => write!(f, "({})", self.traverse_pi_types()),
             Var(name) => write!(f, "{}", name),
             Lambda(binder, body) => write!(f, "({} => {})", binder, body),