diff --git a/.gitignore b/.gitignore
index 9550e81..2577afd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -81,3 +81,4 @@ TestUser51.cert
 /nss-3.89.tar.gz
 /nss-3.89-with-nspr-4.35.tar.gz
 /nss-3.90-with-nspr-4.35.tar.gz
+/nss-3.91-with-nspr-4.35.tar.gz
diff --git a/nss-3.90-DisablingASM.patch b/nss-3.90-DisablingASM.patch
deleted file mode 100644
index 7d1a17f..0000000
--- a/nss-3.90-DisablingASM.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-diff --git a/lib/freebl/Makefile b/lib/freebl/Makefile
-index 74e8e65..8995752 100644
---- a/lib/freebl/Makefile
-+++ b/lib/freebl/Makefile
-@@ -568,7 +568,6 @@ ifneq ($(shell $(CC) -? 2>&1 >/dev/null </dev/null | sed -e 's/:.*//;1q'),lcc)
-             HAVE_INT128_SUPPORT = 1
-             DEFINES += -DHAVE_INT128_SUPPORT
-     else ifeq (1,$(CC_IS_GCC))
--        SUPPORTS_VALE_CURVE25519 = 1
-         ifneq (,$(filter 4.6 4.7 4.8 4.9,$(word 1,$(GCC_VERSION)).$(word 2,$(GCC_VERSION))))
-             HAVE_INT128_SUPPORT = 1
-             DEFINES += -DHAVE_INT128_SUPPORT
-diff --git a/lib/freebl/freebl.gyp b/lib/freebl/freebl.gyp
-index 65f9a80..23940ef 100644
---- a/lib/freebl/freebl.gyp
-+++ b/lib/freebl/freebl.gyp
-@@ -866,12 +866,6 @@
-           }],
-         ],
-       }],
--      [ 'supports_vale_curve25519==1', {
--        'defines': [
--          # The Makefile does version-tests on GCC, but we're not doing that here.
--          'HACL_CAN_COMPILE_INLINE_ASM',
--        ],
--      }],
-       [ 'OS=="linux" or OS=="android"', {
-         'conditions': [
-           [ 'target_arch=="x64"', {
-@@ -934,11 +928,6 @@
-   'variables': {
-     'module': 'nss',
-     'conditions': [
--      [ 'target_arch=="x64" and cc_is_gcc==1', {
--        'supports_vale_curve25519%': 1,
--      }, {
--        'supports_vale_curve25519%': 0,
--      }],
-       [ 'target_arch=="x64" or target_arch=="arm64" or target_arch=="aarch64"', {
-         'have_int128_support%': 1,
-       }, {
-diff --git a/lib/freebl/freebl_base.gypi b/lib/freebl/freebl_base.gypi
-index d198c44..34b6b3c 100644
---- a/lib/freebl/freebl_base.gypi
-+++ b/lib/freebl/freebl_base.gypi
-@@ -151,11 +151,6 @@
-         'ecl/curve25519_32.c',
-       ],
-     }],
--    ['supports_vale_curve25519==1', {
--      'sources': [
--        'verified/Hacl_Curve25519_64.c',
--      ],
--    }],
-     ['(target_arch!="ppc64" and target_arch!="ppc64le") or disable_altivec==1', {
-       'sources': [
-         # Gyp does not support per-file cflags, so working around like this.
diff --git a/nss.spec b/nss.spec
index f41373e..a7042b8 100644
--- a/nss.spec
+++ b/nss.spec
@@ -1,13 +1,13 @@
 %global nspr_version 4.35.0
-%global nss_version 3.90.0
+%global nss_version 3.91.0
 # NOTE: To avoid NVR clashes of nspr* packages:
 # - reset %%{nspr_release} to 1, when updating %%{nspr_version}
 # - increment %%{nspr_version}, when updating the NSS part only
-%global baserelease 2
+%global baserelease 1
 %global nss_release %baserelease
 # use "%%global nspr_release %%[%%baserelease+n]" to handle offsets when
 # release number between nss and nspr are different.
-%global nspr_release %[%baserelease+6]
+%global nspr_release %[%baserelease+8]
 # only need to update this as we added new
 # algorithms under nss policy control
 %global crypto_policies_version 20210118
@@ -135,10 +135,6 @@ Patch40:          nss-no-dbm-man-page.patch
 # https://bugzilla.mozilla.org/show_bug.cgi?id=1774659
 Patch51:	nss-3.79-dbtool.patch
 
-# https://bugzilla.mozilla.org/show_bug.cgi?id=1836781
-# https://bugzilla.mozilla.org/show_bug.cgi?id=1836925
-Patch60:          nss-3.90-DisablingASM.patch
-
 Patch100:         nspr-config-pc.patch
 Patch101:         nspr-gcc-atomics.patch
 
@@ -1092,6 +1088,9 @@ update-crypto-policies &> /dev/null || :
 
 
 %changelog
+* Tue Jul 4 2023 Frantisek Krenzelok <krenzelok.frantisek@gmail.com> - 3.91.0-1
+- Update NSS to 3.91.0
+
 * Tue Jun 6 2023 Frantisek Krenzelok <krenzelok.frantisek@gmail.com> - 3.90.0-1
 - Add patch for https://bugzilla.mozilla.org/show_bug.cgi?id=1836781 &
                 https://bugzilla.mozilla.org/show_bug.cgi?id=1836925
diff --git a/sources b/sources
index 126d634..e6a5c5c 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
 SHA512 (blank-cert9.db) = 2f8eab4c0612210ee47db8a3a80c1b58a0b43849551af78c7da403fda3e3d4e7757838061ae56ccf5aac335cb54f254f0a9e6e9c0dd5920b4155a39264525b06
 SHA512 (blank-key4.db) = 8fedae93af7163da23fe9492ea8e785a44c291604fa98e58438448efb69c85d3253fc22b926d5c3209c62e58a86038fd4d78a1c4c068bc00600a7f3e5382ebe7
-SHA512 (nss-3.90-with-nspr-4.35.tar.gz) = cbc75af3d3e1bf084011d435f0957d134cb3d3d66dcee45f9712ed22b470035ba1e808fc6457e8dc0d8d8e168d77d1117a4373d42905130f76ea58217ff88e30
+SHA512 (nss-3.91-with-nspr-4.35.tar.gz) = e408dacfa51522b254cc28abc9a2188a05a9d34367e2c770d2bfea0727c7e0073e335a0cdf86f990ab246c331d2c85e1f787c66a1f9aa2fbb0163e6021fb7a37