diff --git a/src/libsodium/crypto_secretstream/xchacha20poly1305/secretstream_xchacha20poly1305.c b/src/libsodium/crypto_secretstream/xchacha20poly1305/secretstream_xchacha20poly1305.c
index b2ed5141..ff915362 100644
--- a/src/libsodium/crypto_secretstream/xchacha20poly1305/secretstream_xchacha20poly1305.c
+++ b/src/libsodium/crypto_secretstream/xchacha20poly1305/secretstream_xchacha20poly1305.c
@@ -235,3 +235,53 @@ crypto_secretstream_xchacha20poly1305_statebytes(void)
 {
     return sizeof(crypto_secretstream_xchacha20poly1305_state);
 }
+
+
+size_t
+crypto_secretstream_xchacha20poly1305_abytes(void)
+{
+    return crypto_secretstream_xchacha20poly1305_ABYTES;
+}
+
+size_t
+crypto_secretstream_xchacha20poly1305_initbytes(void)
+{
+    return crypto_secretstream_xchacha20poly1305_INITBYTES;
+}
+
+
+size_t
+crypto_secretstream_xchacha20poly1305_keybytes(void)
+{
+    return crypto_secretstream_xchacha20poly1305_KEYBYTES;
+}
+
+size_t
+crypto_secretstream_xchacha20poly1305_messagesbytes_max(void)
+{
+    return crypto_secretstream_xchacha20poly1305_MESSAGESBYTES_MAX;
+}
+
+unsigned char
+crypto_secretstream_xchacha20poly1305_tag_message(void)
+{
+    return crypto_secretstream_xchacha20poly1305_TAG_MESSAGE;
+}
+
+unsigned char
+crypto_secretstream_xchacha20poly1305_tag_push(void)
+{
+    return crypto_secretstream_xchacha20poly1305_TAG_PUSH;
+}
+
+unsigned char
+crypto_secretstream_xchacha20poly1305_tag_rekey(void)
+{
+    return crypto_secretstream_xchacha20poly1305_TAG_REKEY;
+}
+
+unsigned char
+crypto_secretstream_xchacha20poly1305_tag_final(void)
+{
+    return crypto_secretstream_xchacha20poly1305_TAG_FINAL;
+}
diff --git a/src/libsodium/include/sodium/crypto_secretstream_xchacha20poly1305.h b/src/libsodium/include/sodium/crypto_secretstream_xchacha20poly1305.h
index 79c4f4c2..5d446efa 100644
--- a/src/libsodium/include/sodium/crypto_secretstream_xchacha20poly1305.h
+++ b/src/libsodium/include/sodium/crypto_secretstream_xchacha20poly1305.h
@@ -16,23 +16,41 @@ extern "C" {
 
 #define crypto_secretstream_xchacha20poly1305_ABYTES \
     (1U + crypto_aead_xchacha20poly1305_ietf_ABYTES)
+SODIUM_EXPORT
+size_t crypto_secretstream_xchacha20poly1305_abytes(void);
 
 #define crypto_secretstream_xchacha20poly1305_INITBYTES \
     crypto_aead_xchacha20poly1305_ietf_NPUBBYTES
+SODIUM_EXPORT
+size_t crypto_secretstream_xchacha20poly1305_initbytes(void);
 
 #define crypto_secretstream_xchacha20poly1305_KEYBYTES \
     crypto_aead_xchacha20poly1305_ietf_KEYBYTES
+SODIUM_EXPORT
+size_t crypto_secretstream_xchacha20poly1305_keybytes(void);
 
 #define crypto_secretstream_xchacha20poly1305_MESSAGESBYTES_MAX \
     ((1ULL << 32) - 2ULL * 64ULL)
+SODIUM_EXPORT
+size_t crypto_secretstream_xchacha20poly1305_messagesbytes_max(void);
 
 #define crypto_secretstream_xchacha20poly1305_TAG_MESSAGE 0x00
+SODIUM_EXPORT
+unsigned char crypto_secretstream_xchacha20poly1305_tag_message(void);
+
 #define crypto_secretstream_xchacha20poly1305_TAG_PUSH    0x01
+SODIUM_EXPORT
+unsigned char crypto_secretstream_xchacha20poly1305_tag_push(void);
+
 #define crypto_secretstream_xchacha20poly1305_TAG_REKEY   0x02
+SODIUM_EXPORT
+unsigned char crypto_secretstream_xchacha20poly1305_tag_rekey(void);
 
 #define crypto_secretstream_xchacha20poly1305_TAG_FINAL \
     (crypto_secretstream_xchacha20poly1305_TAG_PUSH | \
      crypto_secretstream_xchacha20poly1305_TAG_REKEY)
+SODIUM_EXPORT
+unsigned char crypto_secretstream_xchacha20poly1305_tag_final(void);
 
 typedef struct crypto_secretstream_xchacha20poly1305_state {
     unsigned char k[crypto_stream_chacha20_ietf_KEYBYTES];
diff --git a/test/default/secretstream.c b/test/default/secretstream.c
index bd080667..3492ca27 100644
--- a/test/default/secretstream.c
+++ b/test/default/secretstream.c
@@ -174,7 +174,25 @@ main(void)
     sodium_free(k);
     sodium_free(header);
     sodium_free(state);
-    
+
+    assert(crypto_secretstream_xchacha20poly1305_abytes() ==
+           crypto_secretstream_xchacha20poly1305_ABYTES);
+    assert(crypto_secretstream_xchacha20poly1305_initbytes() ==
+           crypto_secretstream_xchacha20poly1305_INITBYTES);
+    assert(crypto_secretstream_xchacha20poly1305_keybytes() ==
+           crypto_secretstream_xchacha20poly1305_KEYBYTES);
+    assert(crypto_secretstream_xchacha20poly1305_messagesbytes_max() ==
+           crypto_secretstream_xchacha20poly1305_MESSAGESBYTES_MAX);
+
+    assert(crypto_secretstream_xchacha20poly1305_tag_message() ==
+           crypto_secretstream_xchacha20poly1305_TAG_MESSAGE);
+    assert(crypto_secretstream_xchacha20poly1305_tag_push() ==
+           crypto_secretstream_xchacha20poly1305_TAG_PUSH);
+    assert(crypto_secretstream_xchacha20poly1305_tag_rekey() ==
+           crypto_secretstream_xchacha20poly1305_TAG_REKEY);
+    assert(crypto_secretstream_xchacha20poly1305_tag_final() ==
+           crypto_secretstream_xchacha20poly1305_TAG_FINAL);
+
     printf("OK\n");
 
     return 0;