diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
new file mode 100644
index 00000000..9bb178e4
--- /dev/null
+++ b/.github/workflows/audit.yml
@@ -0,0 +1,21 @@
+name: Audit
+
+on:
+  pull_request:
+    branches:
+      - main
+  schedule:
+    - cron: '0 10 * * *'
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Check Vulnerabilities
+      uses: pypa/gh-action-pip-audit@v1.1.0
+      with:
+        inputs: requirements.txt docs/requirements.txt
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13b94a78..96698cd6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to the Zowe Client Python SDK will be documented in this file.
 
+## `1.0.0-dev21`
+
+### Bug Fixes
+
+- Fixed Core SDK package referencing a non-existent version of Secrets SDK.
+
 ## `1.0.0-dev20`
 
 ### Enhancements
diff --git a/scripts/license_header.py b/scripts/license_header.py
index 9384aa7d..27541bf5 100644
--- a/scripts/license_header.py
+++ b/scripts/license_header.py
@@ -40,7 +40,7 @@ def main():
         if "build" in root.split(os.path.sep):
             continue
         for file in files:
-            if file.endswith(".py") and file is not "_version.py":
+            if file.endswith(".py") and os.path.basename(file) != "_version.py":
                 file_path = os.path.join(root, file)
                 if not check_and_add_license_header(file_path, write_header):
                     print(f"License header missing in: {file_path}")
diff --git a/src/_version.py b/src/_version.py
index f2d92d6e..5889f191 100644
--- a/src/_version.py
+++ b/src/_version.py
@@ -1 +1 @@
-__version__ = "1.0.0.dev20"
+__version__ = "1.0.0.dev21"
diff --git a/src/core/setup.py b/src/core/setup.py
index b92b2a5b..b607e996 100644
--- a/src/core/setup.py
+++ b/src/core/setup.py
@@ -40,6 +40,6 @@
         "requests~=2.32.0",
         "urllib3~=1.26.18",
     ],
-    extras_require={"secrets": [resolve_sdk_dep("secrets", "~=" + __version__)]},
+    extras_require={"secrets": [resolve_sdk_dep("secrets", "~=1.0.0.dev")]},
     packages=find_namespace_packages(include=["zowe.*"]),
 )
diff --git a/src/secrets/Cargo.lock b/src/secrets/Cargo.lock
index e936cc6b..6f1119f5 100644
--- a/src/secrets/Cargo.lock
+++ b/src/secrets/Cargo.lock
@@ -241,7 +241,7 @@ checksum = "1e186cfbae8084e513daff4240b4797e342f988cecda4fb6c939150f96315fd8"
 
 [[package]]
 name = "keyring"
-version = "1.0.0-dev20"
+version = "1.0.0-dev21"
 dependencies = [
  "pyo3",
  "secrets_core",
diff --git a/src/secrets/Cargo.toml b/src/secrets/Cargo.toml
index 7d00b636..b5e9fc2d 100644
--- a/src/secrets/Cargo.toml
+++ b/src/secrets/Cargo.toml
@@ -2,7 +2,7 @@
 name = "keyring"
 readme = "README.md"
 repository = "https://github.com/zowe/zowe-client-python-sdk"
-version = "1.0.0-dev20"
+version = "1.0.0-dev21"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html