diff --git a/src/ic-cdk-macros/Cargo.toml b/src/ic-cdk-macros/Cargo.toml
index 89d67cc..d24f7f3 100644
--- a/src/ic-cdk-macros/Cargo.toml
+++ b/src/ic-cdk-macros/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ic-cdk-macros"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["DFINITY Stiftung <sdk@dfinity.org>"]
 edition = "2018"
 description = "Canister Developer Kit macros."
@@ -16,7 +16,7 @@ include = ["src", "Cargo.toml", "LICENSE", "README.md"]
 proc-macro = true
 
 [dependencies]
-candid = "0.7.1"
+candid = "0.7.4"
 ic-cdk = { path = "../ic-cdk", version = "0.3" }
 syn = { version = "1.0.58", features = ["fold", "full"] }
 quote = "1.0"
diff --git a/src/ic-cdk/Cargo.toml b/src/ic-cdk/Cargo.toml
index d4cdb88..7603fe7 100644
--- a/src/ic-cdk/Cargo.toml
+++ b/src/ic-cdk/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ic-cdk"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["DFINITY Stiftung <sdk@dfinity.org>"]
 edition = "2018"
 description = "Canister Developer Kit for the Internet Computer."
@@ -13,7 +13,7 @@ keywords = ["internet-computer", "types", "dfinity", "canister", "cdk"]
 include = ["src", "Cargo.toml", "LICENSE", "README.md"]
 
 [dependencies]
-candid = "0.7.1"
+candid = "0.7.4"
 cfg-if = "0.1.10"
 serde = "1.0.110"