diff --git a/Cargo.lock b/Cargo.lock
index 9fb231c3..93feaa97 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2280,17 +2280,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "num-bigint"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f93ab6289c7b344a8a9f60f88d80aa20032336fe78da341afc91c8a2341fc75f"
-dependencies = [
- "autocfg",
- "num-integer",
- "num-traits",
-]
-
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -2301,18 +2290,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "num-rational"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d41702bd167c2df5520b384281bc111a4b5efcf7fbc4c9c222c815b07e0a6a6a"
-dependencies = [
- "autocfg",
- "num-bigint",
- "num-integer",
- "num-traits",
-]
-
 [[package]]
 name = "num-traits"
 version = "0.2.14"
@@ -3579,15 +3556,13 @@ dependencies = [
 
 [[package]]
 name = "solang-parser"
-version = "0.1.12"
+version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6b2ad9c159bd02219a59368133301e6195fdaa2b5d55c628ccdcd611d49235f"
+checksum = "395b6e1ec5af117bd08f963c7cd80f8efd4eed51c5a332aed42b13e3f9bc860b"
 dependencies = [
+ "itertools",
  "lalrpop",
  "lalrpop-util",
- "num-bigint",
- "num-rational",
- "num-traits",
  "phf",
  "unicode-xid",
 ]
diff --git a/ethers-solc/Cargo.toml b/ethers-solc/Cargo.toml
index 0fdf5c43..8427ede4 100644
--- a/ethers-solc/Cargo.toml
+++ b/ethers-solc/Cargo.toml
@@ -35,7 +35,7 @@ tempfile = { version = "3.3.0", optional = true }
 fs_extra = { version = "1.2.0", optional = true }
 sha2 = { version = "0.9.8", default-features = false, optional = true }
 dunce = "1.0.2"
-solang-parser = { default-features = false, version = "0.1.12" }
+solang-parser = { default-features = false, version = "=0.1.13" }
 rayon = "1.5.2"
 rand = { version = "0.8.5", optional = true }
 path-slash = "0.1.4"
diff --git a/ethers-solc/src/resolver/parse.rs b/ethers-solc/src/resolver/parse.rs
index 4bcd8807..642b5104 100644
--- a/ethers-solc/src/resolver/parse.rs
+++ b/ethers-solc/src/resolver/parse.rs
@@ -49,7 +49,7 @@ impl SolData {
             Ok((units, _)) => {
                 for unit in units.0 {
                     match unit {
-                        SourceUnitPart::PragmaDirective(loc, _, pragma, value) => {
+                        SourceUnitPart::PragmaDirective(loc, pragma, value) => {
                             if pragma.name == "solidity" {
                                 // we're only interested in the solidity version pragma
                                 version = Some(SolDataUnit::from_loc(value.string.clone(), loc));
@@ -60,7 +60,7 @@ impl SolData {
                                     Some(SolDataUnit::from_loc(value.string.clone(), loc));
                             }
                         }
-                        SourceUnitPart::ImportDirective(_, import) => {
+                        SourceUnitPart::ImportDirective(import) => {
                             let (import, ids, loc) = match import {
                                 Import::Plain(s, l) => (s, vec![], l),
                                 Import::GlobalSymbol(s, i, l) => (s, vec![(i, None)], l),
diff --git a/ethers-solc/src/utils.rs b/ethers-solc/src/utils.rs
index 48e2cb59..825107ea 100644
--- a/ethers-solc/src/utils.rs
+++ b/ethers-solc/src/utils.rs
@@ -415,7 +415,7 @@ mod tests {
         let (unit, _) = solang_parser::parse(s, 0).unwrap();
         assert_eq!(unit.0.len(), 1);
         match unit.0[0] {
-            SourceUnitPart::ImportDirective(_, _) => {}
+            SourceUnitPart::ImportDirective(_) => {}
             _ => unreachable!("failed to parse import"),
         }
         let imports: Vec<_> = find_import_paths(s).map(|m| m.as_str()).collect();