diff --git a/Cargo.lock b/Cargo.lock
index 79f96aa4..d1f4345d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -492,9 +492,18 @@ dependencies = [
 
 [[package]]
 name = "capnp"
-version = "0.26.0"
+version = "0.26.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58ddce707ad9fb2ae92770523cd0e17a0cf34e79b66a9ca4db2dd993535fe718"
+dependencies = [
+ "embedded-io",
+]
+
+[[package]]
+name = "capnp"
+version = "0.27.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71338171543626713e427635f7de390328d9e85828a816a0c88d959032b34a2f"
+checksum = "6ebfc0da565e747b1640e029bfbda72f61f39fcddfc8b465b4ae3f3e8b649f78"
 dependencies = [
  "embedded-io",
 ]
@@ -505,7 +514,7 @@ version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13aea06b902f885cb0313b11e900e96cd57fef775e9e601a96e14e1d655f3cd3"
 dependencies = [
- "capnp",
+ "capnp 0.26.2",
 ]
 
 [[package]]
@@ -1181,7 +1190,7 @@ dependencies = [
 name = "echidna-wire"
 version = "0.1.0"
 dependencies = [
- "capnp",
+ "capnp 0.27.0",
  "capnpc",
 ]
 
diff --git a/crates/echidna-wire/Cargo.toml b/crates/echidna-wire/Cargo.toml
index 20000256..c075145d 100644
--- a/crates/echidna-wire/Cargo.toml
+++ b/crates/echidna-wire/Cargo.toml
@@ -11,7 +11,7 @@ repository  = "https://github.com/hyperpolymath/echidna"
 build       = "build.rs"
 
 [dependencies]
-capnp = "0.26"
+capnp = "0.27"
 
 [build-dependencies]
 capnpc = "0.26"