diff --git a/Cargo.lock b/Cargo.lock
index ffea3acb..86306f6c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -28,9 +28,9 @@ checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
 
 [[package]]
 name = "base64"
-version = "0.21.4"
+version = "0.21.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ba43ea6f343b788c8764558649e08df62f86c6ef251fdaeb1ffd010a9ae50a2"
+checksum = "35636a1494ede3b646cc98f74f8e62c773a38a659ebc777a2cf26b9b74171df9"
 
 [[package]]
 name = "base64ct"
diff --git a/contracts/okp4-cognitarium/Cargo.toml b/contracts/okp4-cognitarium/Cargo.toml
index 22a6bb20..fcb0443d 100644
--- a/contracts/okp4-cognitarium/Cargo.toml
+++ b/contracts/okp4-cognitarium/Cargo.toml
@@ -43,7 +43,7 @@ serde.workspace = true
 thiserror.workspace = true
 
 [dev-dependencies]
-base64 = "0.21.4"
+base64 = "0.21.5"
 cw-multi-test.workspace = true
 
 [features]
diff --git a/contracts/okp4-objectarium/Cargo.toml b/contracts/okp4-objectarium/Cargo.toml
index aa381da5..7743f02c 100644
--- a/contracts/okp4-objectarium/Cargo.toml
+++ b/contracts/okp4-objectarium/Cargo.toml
@@ -47,7 +47,7 @@ snap = "1"
 thiserror.workspace = true
 
 [dev-dependencies]
-base64 = "0.21.4"
+base64 = "0.21.5"
 cw-multi-test.workspace = true
 
 [features]