diff --git a/thegraph-core/Cargo.toml b/thegraph-core/Cargo.toml
index 6e4a8a0..792e408 100644
--- a/thegraph-core/Cargo.toml
+++ b/thegraph-core/Cargo.toml
@@ -34,7 +34,7 @@ bs58 = "0.5"
 fake = { version = "3.0", optional = true }
 serde = { version = "1.0", optional = true }
 serde_with = { version = "3.8", optional = true }
-thiserror = "1.0"
+thiserror = "2.0"
 
 [dev-dependencies]
 alloy = { version = "0.7", features = ["signer-local"] }
diff --git a/thegraph-graphql-http/Cargo.toml b/thegraph-graphql-http/Cargo.toml
index 022a5ba..a50fd66 100644
--- a/thegraph-graphql-http/Cargo.toml
+++ b/thegraph-graphql-http/Cargo.toml
@@ -22,7 +22,7 @@ graphql_client = { version = "0.14", optional = true }
 reqwest = { version = "0.12", optional = true }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-thiserror = "1.0"
+thiserror = "2.0"
 
 [dev-dependencies]
 assert_matches = "1.5.0"