diff --git a/extra/js115/.SRCINFO b/extra/js115/.SRCINFO
index cc8dd2102..42c6a1941 100644
--- a/extra/js115/.SRCINFO
+++ b/extra/js115/.SRCINFO
@@ -1,6 +1,6 @@
 pkgbase = js115
 	pkgdesc = JavaScript interpreter and libraries - Version 115
-	pkgver = 115.10.0
+	pkgver = 115.11.0
 	pkgrel = 1
 	url = https://spidermonkey.dev/
 	arch = x86_64
@@ -12,7 +12,7 @@ pkgbase = js115
 	makedepends = lld
 	makedepends = llvm
 	makedepends = python
-	makedepends = rust
+	makedepends = rustup
 	makedepends = zip
 	depends = gcc-libs
 	depends = glibc
@@ -20,12 +20,12 @@ pkgbase = js115
 	depends = sh
 	depends = zlib
 	options = !lto
-	source = https://archive.mozilla.org/pub/firefox/releases/115.10.0esr/source/firefox-115.10.0esr.source.tar.xz
-	source = https://archive.mozilla.org/pub/firefox/releases/115.10.0esr/source/firefox-115.10.0esr.source.tar.xz.asc
+	source = https://archive.mozilla.org/pub/firefox/releases/115.11.0esr/source/firefox-115.11.0esr.source.tar.xz
+	source = https://archive.mozilla.org/pub/firefox/releases/115.11.0esr/source/firefox-115.11.0esr.source.tar.xz.asc
 	validpgpkeys = 14F26682D0916CDD81E37B6D61B7B526D98F0353
-	sha256sums = 0afd3c733d95f7047f258d1a9768d06d856217fe736d85bfb370db9dd926eef2
+	sha256sums = 16be46f16a356a2b8bd3541805a24c8a2acf6f077cf8a65859689685c26025e0
 	sha256sums = SKIP
-	b2sums = 342d5cf4d61b3efe3dde6a6e53f064739d4107690f1d101915ba8cf2214f518aa8c7490903e20179f0874a3bd62871723e877e8f789d9816f3e0d9227d751eb6
+	b2sums = ced11d0665215dbf0aed710015a1e27863ecb8ccbba71ff6f6c57e1789e54c3c7c1940507db86ff2d8eea4d323a9ca7fbc40eaa6eaa7b0ec922ff69ffad64886
 	b2sums = SKIP
 
 pkgname = js115
diff --git a/extra/js115/PKGBUILD b/extra/js115/PKGBUILD
index 7bb54946a..efefe392e 100644
--- a/extra/js115/PKGBUILD
+++ b/extra/js115/PKGBUILD
@@ -5,7 +5,7 @@
 #  - remove PGO build
 
 pkgname=js115
-pkgver=115.10.0
+pkgver=115.11.0
 pkgrel=1
 pkgdesc="JavaScript interpreter and libraries - Version 115"
 url="https://spidermonkey.dev/"
@@ -41,15 +41,19 @@ validpgpkeys=(
   # https://blog.mozilla.org/security/2023/05/11/updated-gpg-key-for-signing-firefox-releases/
   14F26682D0916CDD81E37B6D61B7B526D98F0353
 )
-sha256sums=('0afd3c733d95f7047f258d1a9768d06d856217fe736d85bfb370db9dd926eef2'
+sha256sums=('16be46f16a356a2b8bd3541805a24c8a2acf6f077cf8a65859689685c26025e0'
             'SKIP')
-b2sums=('342d5cf4d61b3efe3dde6a6e53f064739d4107690f1d101915ba8cf2214f518aa8c7490903e20179f0874a3bd62871723e877e8f789d9816f3e0d9227d751eb6'
+b2sums=('ced11d0665215dbf0aed710015a1e27863ecb8ccbba71ff6f6c57e1789e54c3c7c1940507db86ff2d8eea4d323a9ca7fbc40eaa6eaa7b0ec922ff69ffad64886'
         'SKIP')
 
 # Make sure the duplication between bin and lib is found
 COMPRESSZST+=(--long)
 
 prepare() {
+  # packed_simd no longer builds with 1.78.0
+  #rustup toolchain update --profile minimal 1.77.2
+  #rustup default 1.77.2
+
   mkdir mozbuild
   cd firefox-$pkgver