diff --git a/Cargo.lock b/Cargo.lock
index a8b97ff26f5f..8683ddb8c7d0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5310,7 +5310,7 @@ dependencies = [
  "prost",
  "prost-types",
  "tempfile",
- "which 4.0.2",
+ "which 4.2.4",
 ]
 
 [[package]]
@@ -7420,7 +7420,7 @@ dependencies = [
  "structopt 0.3.21",
  "tempfile",
  "textwrap 0.13.4",
- "which 4.0.2",
+ "which 4.2.4",
 ]
 
 [[package]]
@@ -7890,12 +7890,13 @@ dependencies = [
 
 [[package]]
 name = "which"
-version = "4.0.2"
+version = "4.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87c14ef7e1b8b8ecfc75d5eca37949410046e66f15d185c01d70824f1f8111ef"
+checksum = "2a5a7e487e921cf220206864a94a89b6c6905bfc19f1057fa26a4cb360e5c1d2"
 dependencies = [
+ "either",
+ "lazy_static",
  "libc",
- "thiserror",
 ]
 
 [[package]]
diff --git a/language/transaction-builder/generator/Cargo.toml b/language/transaction-builder/generator/Cargo.toml
index ed7898bba66b..53ce56182e71 100644
--- a/language/transaction-builder/generator/Cargo.toml
+++ b/language/transaction-builder/generator/Cargo.toml
@@ -26,7 +26,7 @@ bcs = "0.1.2"
 
 [dev-dependencies]
 tempfile = "3.2.0"
-which = "4.0.2"
+which = "4.2.4"
 
 [features]
 default = []