diff --git a/src/solidity-common/solidity_ast.ml b/src/solidity-common/solidity_ast.ml
index 1a84cb7..d4f0cbe 100644
--- a/src/solidity-common/solidity_ast.ml
+++ b/src/solidity-common/solidity_ast.ml
@@ -248,13 +248,20 @@ and number_unit =
   | Days
   | Weeks
   | Years
-  | Nanoton  (* freeton *)
-  | Microton (* freeton *)
-  | Milliton (* freeton *)
-  | Ton      (* freeton *)
-  | Kiloton  (* freeton *)
-  | Megaton  (* freeton *)
-  | Gigaton  (* freeton *)
+  | Nanoton   (* freeton / everscale *)
+  | Microton  (* freeton / everscale *)
+  | Milliton  (* freeton / everscale *)
+  | Ton       (* freeton / everscale *)
+  | Kiloton   (* freeton / everscale *)
+  | Megaton   (* freeton / everscale *)
+  | Gigaton   (* freeton / everscale *)
+  | Nanoever  (* freeton / everscale *)
+  | Microever (* freeton / everscale *)
+  | Milliever (* freeton / everscale *)
+  | Ever      (* freeton / everscale *)
+  | Kiloever  (* freeton / everscale *)
+  | Megaever  (* freeton / everscale *)
+  | Gigaever  (* freeton / everscale *)
 
 and unary_operator =
   | UPlus
@@ -393,27 +400,34 @@ let convertible_visibility ~from ~to_ =
 let unit_factor unit =
   let z =
     match unit with
-    | Unit     -> Z.one
-    | Wei      -> Z.one
-    | Kwei     -> ExtZ._10_3
-    | Mwei     -> ExtZ._10_6
-    | Gwei     -> ExtZ._10_9
-    | Twei     -> ExtZ._10_12
-    | Pwei     -> ExtZ._10_15
-    | Ether    -> ExtZ._10_18
-    | Hours    -> ExtZ._3600
-    | Minutes  -> ExtZ._60
-    | Seconds  -> Z.one
-    | Days     -> ExtZ._24x3600
-    | Weeks    -> ExtZ._7x24x3600
-    | Years    -> ExtZ._365x24x3600
-    | Nanoton  -> Z.one
-    | Microton -> ExtZ._10_3
-    | Milliton -> ExtZ._10_6
-    | Ton      -> ExtZ._10_9
-    | Kiloton  -> ExtZ._10_12
-    | Megaton  -> ExtZ._10_15
-    | Gigaton  -> ExtZ._10_18
+    | Unit      -> Z.one
+    | Wei       -> Z.one
+    | Kwei      -> ExtZ._10_3
+    | Mwei      -> ExtZ._10_6
+    | Gwei      -> ExtZ._10_9
+    | Twei      -> ExtZ._10_12
+    | Pwei      -> ExtZ._10_15
+    | Ether     -> ExtZ._10_18
+    | Hours     -> ExtZ._3600
+    | Minutes   -> ExtZ._60
+    | Seconds   -> Z.one
+    | Days      -> ExtZ._24x3600
+    | Weeks     -> ExtZ._7x24x3600
+    | Years     -> ExtZ._365x24x3600
+    | Nanoton   -> Z.one
+    | Microton  -> ExtZ._10_3
+    | Milliton  -> ExtZ._10_6
+    | Ton       -> ExtZ._10_9
+    | Kiloton   -> ExtZ._10_12
+    | Megaton   -> ExtZ._10_15
+    | Gigaton   -> ExtZ._10_18
+    | Nanoever  -> Z.one
+    | Microever -> ExtZ._10_3
+    | Milliever -> ExtZ._10_6
+    | Ever      -> ExtZ._10_9
+    | Kiloever  -> ExtZ._10_12
+    | Megaever  -> ExtZ._10_15
+    | Gigaever  -> ExtZ._10_18
   in
   Q.of_bigint z
 
@@ -449,7 +463,7 @@ let apply_binop q1 op q2 =
   | BDiv ->
       Some (Q.div q1 q2)
   | BMod ->
-(* TODO: Solidity allows this on fractions *)
+      (* TODO: Solidity allows this on fractions *)
       if ExtQ.is_int q1 && ExtQ.is_int q2 then
         Some (Q.of_bigint (snd (Z.ediv_rem (Q.num q1) (Q.num q2))))
       else
diff --git a/src/solidity-common/solidity_ast.mli b/src/solidity-common/solidity_ast.mli
index d46d78c..d4fe270 100644
--- a/src/solidity-common/solidity_ast.mli
+++ b/src/solidity-common/solidity_ast.mli
@@ -329,13 +329,20 @@ and number_unit =
   | Days
   | Weeks
   | Years
-  | Nanoton  (* freeton *)
-  | Microton (* freeton *)
-  | Milliton (* freeton *)
-  | Ton      (* freeton *)
-  | Kiloton  (* freeton *)
-  | Megaton  (* freeton *)
-  | Gigaton  (* freeton *)
+  | Nanoton   (* freeton / everscale *)
+  | Microton  (* freeton / everscale *)
+  | Milliton  (* freeton / everscale *)
+  | Ton       (* freeton / everscale *)
+  | Kiloton   (* freeton / everscale *)
+  | Megaton   (* freeton / everscale *)
+  | Gigaton   (* freeton / everscale *)
+  | Nanoever  (* freeton / everscale *)
+  | Microever (* freeton / everscale *)
+  | Milliever (* freeton / everscale *)
+  | Ever      (* freeton / everscale *)
+  | Kiloever  (* freeton / everscale *)
+  | Megaever  (* freeton / everscale *)
+  | Gigaever  (* freeton / everscale *)
 
 and unary_operator =
   | UPlus
diff --git a/src/solidity-common/solidity_printer.ml b/src/solidity-common/solidity_printer.ml
index b1c2f8f..8aef3ee 100644
--- a/src/solidity-common/solidity_printer.ml
+++ b/src/solidity-common/solidity_printer.ml
@@ -51,28 +51,36 @@ let string_of_visibility = function
   | VPrivate ->  "private"
 
 let string_of_number_unit = function
-  | Unit ->     ""
-  | Wei ->      "wei"
-  | Kwei ->     "kwei"
-  | Mwei ->     "mwei"
-  | Gwei ->     "gwei"
-  | Twei ->     "szabo"
-  | Pwei ->     "finney"
-  | Ether ->    "ether"
-  | Hours ->    "hours"
-  | Minutes ->  "minutes"
-  | Seconds ->  "seconds"
-  | Days ->     "days"
-  | Weeks ->    "weeks"
-  | Years ->    "years"
-
-  | Nanoton   ->    "nanoton"
-  | Microton   ->    "microton"
-  | Milliton   ->    "milliton"
-  | Ton   ->    "ton"
-  | Kiloton   ->    "kiloton"
-  | Megaton   ->    "megaton"
-  | Gigaton   ->    "gigaton"
+  | Unit ->    ""
+  | Wei ->     "wei"
+  | Kwei ->    "kwei"
+  | Mwei ->    "mwei"
+  | Gwei ->    "gwei"
+  | Twei ->    "szabo"
+  | Pwei ->    "finney"
+  | Ether ->   "ether"
+  | Hours ->   "hours"
+  | Minutes -> "minutes"
+  | Seconds -> "seconds"
+  | Days ->    "days"
+  | Weeks ->   "weeks"
+  | Years ->   "years"
+
+  | Nanoton ->  "nanoton"
+  | Microton -> "microton"
+  | Milliton -> "milliton"
+  | Ton ->      "ton"
+  | Kiloton ->  "kiloton"
+  | Megaton ->  "megaton"
+  | Gigaton ->  "gigaton"
+
+  | Nanoever ->  "nanoever"
+  | Microever -> "microever"
+  | Milliever -> "milliever"
+  | Ever ->      "ever"
+  | Kiloever ->  "kiloever"
+  | Megaever ->  "megaever"
+  | Gigaever ->  "gigaever"
 
 let string_of_unop = function
   | UPlus ->   "+"
diff --git a/src/solidity-parser/solidity_lexer.mll b/src/solidity-parser/solidity_lexer.mll
index 9da159b..a3e6db7 100644
--- a/src/solidity-parser/solidity_lexer.mll
+++ b/src/solidity-parser/solidity_lexer.mll
@@ -345,6 +345,28 @@ if freeton then
 
         "gigaton", NUMBERUNIT (Gigaton);
         "GTon", NUMBERUNIT (Gigaton);
+
+        (* "nano", NUMBERUNIT (Ever); *)
+        "nanoever", NUMBERUNIT (Nanoever);
+        "nEver", NUMBERUNIT (Nanoever);
+
+        "micro", NUMBERUNIT (Microever);
+        "microever", NUMBERUNIT (Microever);
+
+        "milli", NUMBERUNIT (Milliever);
+        "milliever", NUMBERUNIT (Milliever);
+
+        "ever", NUMBERUNIT (Ever);
+        "Ever", NUMBERUNIT (Ever);
+
+        "kiloever", NUMBERUNIT (Kiloever);
+        "kEver", NUMBERUNIT (Kiloever);
+
+        "megaever", NUMBERUNIT (Megaever);
+        "MEver", NUMBERUNIT (Megaever);
+
+        "gigaever", NUMBERUNIT (Gigaever);
+        "GEver", NUMBERUNIT (Gigaever);
       ];
       ()
   end