diff --git a/Cargo.lock b/Cargo.lock
index 7c0455e2..8a71dab5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -524,6 +524,12 @@ version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "604178f6c5c21f02dc555784810edfb88d34ac2c73b2eae109655649ee73ce3d"
 
+[[package]]
+name = "base64"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9475866fec1451be56a3c2400fd081ff546538961565ccb5b7142cbd22bc7a51"
+
 [[package]]
 name = "bincode"
 version = "1.3.3"
@@ -1073,12 +1079,6 @@ dependencies = [
  "const-random",
 ]
 
-[[package]]
-name = "doc-comment"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
-
 [[package]]
 name = "edit-distance"
 version = "2.1.0"
@@ -3093,36 +3093,13 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "snafu"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e4de37ad025c587a29e8f3f5605c00f70b98715ef90b9061a815b9e59e9042d6"
-dependencies = [
- "backtrace",
- "doc-comment",
- "snafu-derive 0.7.5",
-]
-
 [[package]]
 name = "snafu"
 version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "75976f4748ab44f6e5332102be424e7c2dc18daeaf7e725f2040c3ebb133512e"
 dependencies = [
- "snafu-derive 0.8.2",
-]
-
-[[package]]
-name = "snafu-derive"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "990079665f075b699031e9c08fd3ab99be5029b96f3b78dc0709e8f77e4efebf"
-dependencies = [
- "heck 0.4.1",
- "proc-macro2",
- "quote",
- "syn 1.0.109",
+ "snafu-derive",
 ]
 
 [[package]]
@@ -3386,23 +3363,23 @@ dependencies = [
 
 [[package]]
 name = "tagged-base64"
-version = "0.3.4"
-source = "git+https://github.com/EspressoSystems/tagged-base64.git?tag=0.3.4#93be6f0f5c0ec8458f13dede3d2b68dcce12a608"
+version = "0.4.0"
+source = "git+https://github.com/EspressoSystems/tagged-base64.git?tag=v0.4.0#eb449140f2feb597983ebaf0ee2464ed6cee322a"
 dependencies = [
  "ark-serialize",
  "ark-std",
- "base64 0.21.2",
+ "base64 0.22.0",
  "crc-any",
  "serde",
- "snafu 0.7.5",
+ "snafu",
  "tagged-base64-macros",
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "tagged-base64-macros"
-version = "0.3.3"
-source = "git+https://github.com/EspressoSystems/tagged-base64.git?tag=0.3.4#93be6f0f5c0ec8458f13dede3d2b68dcce12a608"
+version = "0.4.0"
+source = "git+https://github.com/EspressoSystems/tagged-base64.git?tag=v0.4.0#eb449140f2feb597983ebaf0ee2464ed6cee322a"
 dependencies = [
  "quote",
  "syn 1.0.109",
@@ -3511,7 +3488,7 @@ dependencies = [
  "shellexpand",
  "signal-hook",
  "signal-hook-async-std",
- "snafu 0.8.2",
+ "snafu",
  "strum",
  "strum_macros",
  "tagged-base64",
diff --git a/Cargo.toml b/Cargo.toml
index 063cf81c..babf0061 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,7 +54,7 @@ signal-hook = "0.3.14"
 snafu = "0.8"
 strum = "0.26"
 strum_macros = "0.26"
-tagged-base64 = { git = "https://github.com/EspressoSystems/tagged-base64.git", tag = "0.3.4" }
+tagged-base64 = { git = "https://github.com/EspressoSystems/tagged-base64.git", tag = "v0.4.0" }
 tide = { version = "0.16.0", default-features = false }
 tide-websockets = "0.4.0"
 toml = "0.8"