diff --git a/libwvdrmengine/oemcrypto/odk/include/odk.h b/libwvdrmengine/oemcrypto/odk/include/odk.h
index 2df08e17..ab0a88b9 100644
--- a/libwvdrmengine/oemcrypto/odk/include/odk.h
+++ b/libwvdrmengine/oemcrypto/odk/include/odk.h
@@ -274,6 +274,48 @@ OEMCryptoResult ODK_PrepareCoreLicenseRequest(
     const ODK_NonceValues* nonce_values,
     const ODK_MessageCounterInfo* counter_info);
 
+/**
+ * Modifies the message to include a core license release at the beginning of
+ * the message buffer. The values in nonce_values are used to populate the
+ * message.
+ *
+ * This shall be called by OEMCrypto from OEMCrypto_PrepAndSignLicenseRelease.
+ *
+ * NOTE: if the message pointer is null and/or input core_message_size is
+ * zero, this function returns OEMCrypto_ERROR_SHORT_BUFFER and sets output
+ * core_message_size to the size needed.
+ *
+ * @param[in,out] message: Pointer to memory for the entire message. Modified by
+ *       the ODK library.
+ * @param[in] message_length: length of the entire message buffer.
+ * @param[in,out] core_message_size: length of the core message at the beginning
+ *       of the message. (in) size of buffer reserved for the core message, in
+ *       bytes. (out) actual length of the core message, in bytes.
+ * @param[in] nonce_values: pointer to the session's nonce data.
+ * @param[in] message_count_info: information used for server-side anomaly
+ * detection
+ * @param[in] status: the enumeration of OEMCrypto_Usage_Entry_Status
+ * @param[in] clock_security_level: the enumeration of
+ * OEMCryto_Clock_Security_Level
+ * @param[in] seconds_since_license_requested: the time between the license
+ * being requested and the release being generated in seconds
+ * @param[in] seconds_since_first_decrypt: The time since playback has started
+ * in seconds
+ *
+ * @retval OEMCrypto_SUCCESS
+ * @retval OEMCrypto_ERROR_SHORT_BUFFER: core_message_size is too small
+ * @retval OEMCrypto_ERROR_INVALID_CONTEXT
+ *
+ * @version
+ * This method is new in version 19 of the API.
+ */
+OEMCryptoResult ODK_PrepareCoreLicenseRelease(
+    uint8_t* message, size_t message_length, size_t* core_message_size,
+    const ODK_NonceValues* nonce_values,
+    const ODK_MessageCounterInfo* counter_info, uint32_t status,
+    uint32_t clock_security_level, int64_t seconds_since_license_requested,
+    int64_t seconds_since_first_decrypt);
+
 /**
  * Modifies the message to include a core renewal request at the beginning of
  * the message buffer. The values in nonce_values, clock_values and
diff --git a/libwvdrmengine/oemcrypto/odk/include/odk_structs.h b/libwvdrmengine/oemcrypto/odk/include/odk_structs.h
index ad342018..63b5cbe6 100644
--- a/libwvdrmengine/oemcrypto/odk/include/odk_structs.h
+++ b/libwvdrmengine/oemcrypto/odk/include/odk_structs.h
@@ -19,7 +19,7 @@ extern "C" {
 #define ODK_MINOR_VERSION 0
 
 /* ODK Version string. Date changed automatically on each release. */
-#define ODK_RELEASE_DATE "ODK v19.0 2023-08-28"
+#define ODK_RELEASE_DATE "ODK v19.0 2023-10-09"
 
 /* The lowest version number for an ODK message. */
 #define ODK_FIRST_VERSION 16