diff --git a/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.lock b/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.lock
index 5d31af6d3..b38314c55 100644
--- a/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.lock
+++ b/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.lock
@@ -20,6 +20,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "base64"
+version = "0.23.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac07cdecf99051d9a5238b80f35af32cdeba5b336e55d957b318b50137e18da5"
+
 [[package]]
 name = "bytemuck"
 version = "1.25.2"
@@ -59,7 +65,7 @@ checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 name = "example-wasm-sso-plugin"
 version = "0.1.0"
 dependencies = [
- "base64",
+ "base64 0.23.1",
  "extism-pdk",
  "serde_json",
  "url",
@@ -72,7 +78,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ad19858c4c462309a8f3a20abec53e8603bda1eefda26c8bfab51d5516b40cbb"
 dependencies = [
  "anyhow",
- "base64",
+ "base64 0.22.1",
  "bytemuck",
  "extism-convert-macros",
  "prost",
@@ -100,7 +106,7 @@ version = "1.30.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2f59c8dadb5e0bde9a48c6ed45312e6ef625cbcd5f67c28459dbc8fe8bc0383"
 dependencies = [
- "base64",
+ "base64 0.22.1",
  "serde",
  "serde_json",
 ]
@@ -112,7 +118,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "352fcb5a66eb74145a1c4a01f2bd15d59c62c85be73aac8471880c65b26b798f"
 dependencies = [
  "anyhow",
- "base64",
+ "base64 0.22.1",
  "extism-convert",
  "extism-manifest",
  "extism-pdk-derive",
diff --git a/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.toml b/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.toml
index 11cb6e9c8..82fe1769c 100644
--- a/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.toml
+++ b/sdk/plugin-wasm/fixtures/example-sso-plugin/Cargo.toml
@@ -14,4 +14,4 @@ crate-type = ["cdylib"]
 extism-pdk = "1.4"
 serde_json = "1"
 url = "2"
-base64 = "0.22"
+base64 = "0.23"