diff --git a/packages/core/src/env-set/oidc.test.ts b/packages/core/src/env-set/oidc.test.ts
index df1e18adb1c..e86c2ae915d 100644
--- a/packages/core/src/env-set/oidc.test.ts
+++ b/packages/core/src/env-set/oidc.test.ts
@@ -17,20 +17,28 @@ describe('oidc env-set', () => {
     jest.resetModules();
   });
 
-  it('should read OIDC private keys if `OIDC_PRIVATE_KEYS` is provided', async () => {
-    process.env.OIDC_PRIVATE_KEYS = 'foo, bar';
+  it('should read OIDC private keys if raw `OIDC_PRIVATE_KEYS` is provided', async () => {
+    const rawKeys = [
+      '-----BEGIN PRIVATE KEY-----\nFOO\n-----END PRIVATE KEY-----',
+      '-----BEGIN PRIVATE KEY-----\nBAR\n-----END PRIVATE KEY-----',
+    ];
+    process.env.OIDC_PRIVATE_KEYS = rawKeys.join(',');
 
     const privateKeys = await readPrivateKeys();
 
-    expect(privateKeys).toEqual(['foo', 'bar']);
+    expect(privateKeys).toEqual([
+      '-----BEGIN PRIVATE KEY-----\nFOO\n-----END PRIVATE KEY-----',
+      '-----BEGIN PRIVATE KEY-----\nBAR\n-----END PRIVATE KEY-----',
+    ]);
   });
 
-  it('should read OIDC private keys if provided `OIDC_PRIVATE_KEYS` contain newline characters', async () => {
-    process.env.OIDC_PRIVATE_KEYS = 'foo\nbar, bob\noop';
+  it('should transpile and read OIDC private keys if base64-formatted `OIDC_PRIVATE_KEYS` is provided', async () => {
+    const base64Keys = ['foo', 'bar'].map((key) => Buffer.from(key, 'utf8').toString('base64'));
+    process.env.OIDC_PRIVATE_KEYS = base64Keys.join(',');
 
     const privateKeys = await readPrivateKeys();
 
-    expect(privateKeys).toEqual(['foo\nbar', 'bob\noop']);
+    expect(privateKeys).toEqual(['foo', 'bar']);
   });
 
   it('should read OIDC private keys if `OIDC_PRIVATE_KEY_PATHS` is provided', async () => {
diff --git a/packages/core/src/env-set/oidc.ts b/packages/core/src/env-set/oidc.ts
index 45189c24d0b..33b713ee895 100644
--- a/packages/core/src/env-set/oidc.ts
+++ b/packages/core/src/env-set/oidc.ts
@@ -15,6 +15,8 @@ const defaultLogtoOidcPrivateKeyPath = './oidc-private-key.pem';
 
 const listFormatter = new Intl.ListFormat('en', { style: 'long', type: 'conjunction' });
 
+const isBase64FormatPrivateKey = (key: string) => !key.includes('-');
+
 /**
  * Try to read private keys with the following order:
  *
@@ -30,7 +32,13 @@ export const readPrivateKeys = async (): Promise<string[]> => {
   const privateKeys = getEnvAsStringArray('OIDC_PRIVATE_KEYS');
 
   if (privateKeys.length > 0) {
-    return privateKeys;
+    return privateKeys.map((key) => {
+      if (isBase64FormatPrivateKey(key)) {
+        return Buffer.from(key, 'base64').toString('utf8');
+      }
+
+      return key;
+    });
   }
 
   const privateKeyPaths = getEnvAsStringArray('OIDC_PRIVATE_KEY_PATHS');