diff --git a/mozilla-nss.changes b/mozilla-nss.changes
index c7ee5b9..1abed2b 100644
--- a/mozilla-nss.changes
+++ b/mozilla-nss.changes
@@ -1,3 +1,32 @@
+-------------------------------------------------------------------
+Thu Apr 28 20:40:04 UTC 2022 - Wolfgang Rosenauer <wr@rosenauer.org>
+
+- update to NSS 3.77
+  * Bug 1762244 - resolve mpitests build failure on Windows.
+  * bmo#1761779 - Fix link to TLS page on wireshark wiki
+  * bmo#1754890 - Add two D-TRUST 2020 root certificates.
+  * bmo#1751298 - Add Telia Root CA v2 root certificate.
+  * bmo#1751305 - Remove expired explicitly distrusted certificates
+                  from certdata.txt.
+  * bmo#1005084 - support specific RSA-PSS parameters in mozilla::pkix
+  * bmo#1753535 - Remove obsolete stateEnd check in SEC_ASN1DecoderUpdate.
+  * bmo#1756271 - Remove token member from NSSSlot struct.
+  * bmo#1602379 - Provide secure variants of mpp_pprime and mpp_make_prime.
+  * bmo#1757279 - Support UTF-8 library path in the module spec string.
+  * bmo#1396616 - Update nssUTF8_Length to RFC 3629 and fix buffer overrun.
+  * bmo#1760827 - Add a CI Target for gcc-11.
+  * bmo#1760828 - Change to makefiles for gcc-4.8.
+  * bmo#1741688 - Update googletest to 1.11.0
+  * bmo#1759525 - Add SetTls13GreaseEchSize to experimental API.
+  * bmo#1755264 - TLS 1.3 Illegal legacy_version handling/alerts.
+  * bmo#1755904 - Fix calculation of ECH HRR Transcript.
+  * bmo#1758741 - Allow ld path to be set as environment variable.
+  * bmo#1760653 - Ensure we don't read uninitialized memory in ssl gtests.
+  * bmo#1758478 - Fix DataBuffer Move Assignment.
+  * bmo#1552254 - internal_error alert on Certificate Request with
+                  sha1+ecdsa in TLS 1.3
+  * bmo#1755092 - rework signature verification in mozilla::pkix
+
 -------------------------------------------------------------------
 Sun Apr 10 18:32:41 UTC 2022 - Callum Farmer <gmbr3@opensuse.org>
 
diff --git a/mozilla-nss.spec b/mozilla-nss.spec
index 8aecd9c..03e85f6 100644
--- a/mozilla-nss.spec
+++ b/mozilla-nss.spec
@@ -17,14 +17,14 @@
 #
 
 
-%global nss_softokn_fips_version 3.76
+%global nss_softokn_fips_version 3.77
 %define NSPR_min_version 4.32
 %define nspr_ver %(rpm -q --queryformat '%%{VERSION}' mozilla-nspr)
 %define nssdbdir %{_sysconfdir}/pki/nssdb
 Name:           mozilla-nss
-Version:        3.76.1
+Version:        3.77
 Release:        0
-%define underscore_version 3_76_1
+%define underscore_version 3_77
 Summary:        Network Security Services
 License:        MPL-2.0
 Group:          System/Libraries
diff --git a/nss-3.76.1.tar.gz b/nss-3.76.1.tar.gz
deleted file mode 100644
index 00def1f..0000000
--- a/nss-3.76.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e13104c374e2e1d7890d8f6bc18d0f18eb886ed4dbad4144d1c482f2983d232a
-size 84626067
diff --git a/nss-3.77.tar.gz b/nss-3.77.tar.gz
new file mode 100644
index 0000000..288b9c7
--- /dev/null
+++ b/nss-3.77.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:825edf5a2fd35b788a23ff80face591f82919ae3ad2b8f77d424a450d618dedd
+size 84592839