diff --git a/.gitignore b/.gitignore
index f3ade6a..bb1dfc5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /firefox-52.3.0esr.source.tar.xz
+/firefox-52.4.0esr.source.tar.xz
diff --git a/mozjs52.spec b/mozjs52.spec
index 2afa71e..117f553 100644
--- a/mozjs52.spec
+++ b/mozjs52.spec
@@ -6,7 +6,7 @@
 %endif
 
 Name:           mozjs%{major}
-Version:        52.3.0
+Version:        52.4.0
 Release:        1%{?dist}
 Summary:        SpiderMonkey JavaScript library
 
@@ -20,7 +20,6 @@ Patch0002:      copy-headers.patch
 
 # Patches from https://github.com/ptomato/mozjs / Debian mozjs52_52.3.1-4.debian.tar.xz
 Patch0101:      disable-mozglue.patch
-Patch0102:      remove-nspr-dependency.patch
 Patch0103:      tests-skip-on-all-64-bit-archs.patch
 Patch0104:      include-configure-script.patch
 
@@ -64,7 +63,6 @@ pushd ../..
 %patch0002 -p1
 
 %patch0101 -p1
-%patch0102 -p1
 %patch0103 -p1
 %patch0104 -p1
 
@@ -167,5 +165,8 @@ jit-test/jit_test.py -s -t 1800 --no-progress ../../js/src/js/src/shell/js basic
 %{_includedir}/mozjs-%{major}/
 
 %changelog
+* Thu Sep 28 2017 Kalev Lember <klember@redhat.com> - 52.4.0-1
+- Update to 52.4.0
+
 * Wed Sep 20 2017 Kalev Lember <klember@redhat.com> - 52.3.0-1
 - Initial Fedora packaging, based on earlier mozjs45 work
diff --git a/remove-nspr-dependency.patch b/remove-nspr-dependency.patch
deleted file mode 100644
index 5b1dd47..0000000
--- a/remove-nspr-dependency.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-From 4c5d336b44bc6122a6721905e77849ebd57eca78 Mon Sep 17 00:00:00 2001
-From: Philip Chimento <philip.chimento@gmail.com>
-Date: Wed, 5 Jul 2017 22:53:30 -0700
-Subject: [PATCH] build: Remove unnecessary NSPR dependency
-
-When SpiderMonkey is configured with --enable-posix-nspr-emulation, then
-the dependency on NSPR can be removed from the pkg-config file.
-
-https://bugzilla.mozilla.org/show_bug.cgi?id=1379539
----
- build/autoconf/nspr-build.m4 | 11 ++++++-----
- js/src/js.pc.in              |  2 +-
- 2 files changed, 7 insertions(+), 6 deletions(-)
-
-diff --git a/build/autoconf/nspr-build.m4 b/build/autoconf/nspr-build.m4
-index fe6dab72..b733579c 100644
---- a/build/autoconf/nspr-build.m4
-+++ b/build/autoconf/nspr-build.m4
-@@ -177,11 +177,8 @@ AC_SUBST_LIST(NSPR_CFLAGS)
- AC_SUBST(NSPR_INCLUDE_DIR)
- AC_SUBST(NSPR_LIB_DIR)
- 
--NSPR_PKGCONF_CHECK="nspr"
-+PKGCONF_REQUIRES_PRIVATE="Requires.private: nspr"
- if test -n "$MOZ_SYSTEM_NSPR"; then
--    # piggy back on $MOZ_SYSTEM_NSPR to set a variable for the nspr check for js.pc
--    NSPR_PKGCONF_CHECK="nspr >= $NSPR_MINVER"
--
-     _SAVE_CFLAGS=$CFLAGS
-     CFLAGS="$CFLAGS $NSPR_CFLAGS"
-     AC_TRY_COMPILE([#include "prlog.h"],
-@@ -191,8 +188,12 @@ if test -n "$MOZ_SYSTEM_NSPR"; then
-                 ,
-                 AC_MSG_ERROR([system NSPR does not support PR_STATIC_ASSERT]))
-     CFLAGS=$_SAVE_CFLAGS
-+    # piggy back on $MOZ_SYSTEM_NSPR to set a variable for the nspr check for js.pc
-+    PKGCONF_REQUIRES_PRIVATE="Requires.private: nspr >= $NSPR_MINVER"
-+elif test -n "$JS_POSIX_NSPR"; then
-+    PKGCONF_REQUIRES_PRIVATE=
- fi
--AC_SUBST(NSPR_PKGCONF_CHECK)
-+AC_SUBST([PKGCONF_REQUIRES_PRIVATE])
- 
- fi # _IS_OUTER_CONFIGURE
- 
-diff --git a/js/src/js.pc.in b/js/src/js.pc.in
-index 1efea334..2eae393a 100644
---- a/js/src/js.pc.in
-+++ b/js/src/js.pc.in
-@@ -6,6 +6,6 @@ includedir=@includedir@
- Name: SpiderMonkey @MOZILLA_VERSION@
- Description: The Mozilla library for JavaScript
- Version: @MOZILLA_VERSION@
--Requires.private: @NSPR_PKGCONF_CHECK@
-+@PKGCONF_REQUIRES_PRIVATE@
- Libs: -L${libdir} -l@JS_LIBRARY_NAME@
- Cflags: -include ${includedir}/@JS_LIBRARY_NAME@/js/RequiredDefines.h -I${includedir}/@JS_LIBRARY_NAME@
-
diff --git a/sources b/sources
index ec1f3a5..3e50271 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (firefox-52.3.0esr.source.tar.xz) = 36da8f14b50334e36fca06e09f15583101cadd10e510268255587ea9b09b1fea918da034d6f1d439ab8c34612f6cebc409a0b8d812dddb3f997afebe64d09fe9
+SHA512 (firefox-52.4.0esr.source.tar.xz) = be3be7f9dbf4bd0344d5d76f26d1a5090bb012154d25833d5cd58e5e707c080515b42ed751e1f7e58b15b96939d7da634cafb6e8aa9bb1627ff420836b802183