diff --git a/mozilla-nss.changes b/mozilla-nss.changes
index db7b6fd..8a58dbc 100644
--- a/mozilla-nss.changes
+++ b/mozilla-nss.changes
@@ -1,3 +1,42 @@
+-------------------------------------------------------------------
+Wed Mar  2 14:28:30 UTC 2022 - Wolfgang Rosenauer <wr@rosenauer.org>
+
+- update to NSS 3.75
+  * bmo#1749030 - This patch adds gcc-9 and gcc-10 to the CI.
+  * bmo#1749794 - Make DottedOIDToCode.py compatible with python3.
+  * bmo#1749475 - Avoid undefined shift in SSL_CERT_IS while fuzzing.
+  * bmo#1748386 - Remove redundant key type check.
+  * bmo#1749869 - Update ABI expectations to match ECH changes.
+  * bmo#1748386 - Enable CKM_CHACHA20.
+  * bmo#1747327 - check return on NSS_NoDB_Init and NSS_Shutdown.
+  * bmo#1747310 - real move assignment operator.
+  * bmo#1748245 - Run ECDSA test vectors from bltest as part of the CI tests.
+  * bmo#1743302 - Add ECDSA test vectors to the bltest command line tool.
+  * bmo#1747772 - Allow to build using clang's integrated assembler.
+  * bmo#1321398 - Allow to override python for the build.
+  * bmo#1747317 - test HKDF output rather than input.
+  * bmo#1747316 - Use ASSERT macros to end failed tests early.
+  * bmo#1747310 - move assignment operator for DataBuffer.
+  * bmo#1712879 - Add test cases for ECH compression and unexpected
+                  extensions in SH.
+  * bmo#1725938 - Update tests for ECH-13.
+  * bmo#1725938 - Tidy up error handling.
+  * bmo#1728281 - Add tests for ECH HRR Changes.
+  * bmo#1728281 - Server only sends GREASE HRR extension if enabled
+                  by preference.
+  * bmo#1725938 - Update generation of the Associated Data for ECH-13.
+  * bmo#1712879 - When ECH is accepted, reject extensions which were
+                  only advertised in the Outer Client Hello.
+  * bmo#1712879 - Allow for compressed, non-contiguous, extensions.
+  * bmo#1712879 - Scramble the PSK extension in CHOuter.
+  * bmo#1712647 - Split custom extension handling for ECH.
+  * bmo#1728281 - Add ECH-13 HRR Handling.
+  * bmo#1677181 - Client side ECH padding.
+  * bmo#1725938 - Stricter ClientHelloInner Decompression.
+  * bmo#1725938 - Remove ECH_inner extension, use new enum format.
+  * bmo#1725938 - Update the version number for ECH-13 and adjust
+                  the ECHConfig size.
+
 -------------------------------------------------------------------
 Mon Jan 24 08:13:53 UTC 2022 - Wolfgang Rosenauer <wr@rosenauer.org>
 
diff --git a/mozilla-nss.spec b/mozilla-nss.spec
index f2499b6..4b3e4f7 100644
--- a/mozilla-nss.spec
+++ b/mozilla-nss.spec
@@ -17,14 +17,14 @@
 #
 
 
-%global nss_softokn_fips_version 3.74
+%global nss_softokn_fips_version 3.75
 %define NSPR_min_version 4.32
 %define nspr_ver %(rpm -q --queryformat '%%{VERSION}' mozilla-nspr)
 %define nssdbdir %{_sysconfdir}/pki/nssdb
 Name:           mozilla-nss
-Version:        3.74
+Version:        3.75
 Release:        0
-%define underscore_version 3_74
+%define underscore_version 3_75
 Summary:        Network Security Services
 License:        MPL-2.0
 Group:          System/Libraries
diff --git a/nss-3.74.tar.gz b/nss-3.74.tar.gz
deleted file mode 100644
index 9cde25b..0000000
--- a/nss-3.74.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:88928811f9f40f87d42e2eaccdf6e454562e51486067f2ddbe90aa47ea6cd056
-size 83937875
diff --git a/nss-3.75.tar.gz b/nss-3.75.tar.gz
new file mode 100644
index 0000000..fd28e6a
--- /dev/null
+++ b/nss-3.75.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd571507827284644f4dd522a032acda2286835f6683ed22a1c2d3878cc58582
+size 84738291