diff --git a/Cargo.lock b/Cargo.lock
index d5c783f15..a0e4f435b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -407,7 +407,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cbindgen"
-version = "0.13.0"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4414,7 +4414,7 @@ version = "0.24.0"
 dependencies = [
  "bincode 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bs58 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cbindgen 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cbindgen 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ed25519-dalek 1.0.0-pre.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6056,7 +6056,7 @@ dependencies = [
 "checksum c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7d64d04786e0f528460fc884753cf8dddcc466be308f6026f8e355c41a0e4101"
 "checksum c_linked_list 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4964518bd3b4a8190e832886cdc0da9794f12e8e6c1613a9e90ff331c4c8724b"
 "checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
-"checksum cbindgen 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e21019c4afc1dd5f5ab3ce212d8ccb953f43520db79e0bb6438f3e26cc57dccf"
+"checksum cbindgen 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2c955bd5e66e36a03612c877585d75219da64e3d9ae5f14d76c979ccb95de070"
 "checksum cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)" = "e450b8da92aa6f274e7c6437692f9f2ce6d701fb73bacfcf87897b3f89a4c20e"
 "checksum cexpr 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "a7fa24eb00d5ffab90eaeaf1092ac85c04c64aaf358ea6f84505b8116d24c6af"
 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
diff --git a/sdk-c/Cargo.toml b/sdk-c/Cargo.toml
index 7d5907579..10101ce87 100644
--- a/sdk-c/Cargo.toml
+++ b/sdk-c/Cargo.toml
@@ -22,4 +22,4 @@ solana-sdk = { path = "../sdk", version = "0.24.0" }
 ed25519-dalek = "1.0.0-pre.1"
 
 [build-dependencies]
-cbindgen = "0.13.0"
+cbindgen = "0.13.1"