diff --git a/.github/release-nest-v3 b/.github/release-nest-v3
index c793025..301160a 100644
--- a/.github/release-nest-v3
+++ b/.github/release-nest-v3
@@ -1 +1 @@
-7
\ No newline at end of file
+8
\ No newline at end of file
diff --git a/debian/control b/debian/control
index 9d3517d..468f5b4 100644
--- a/debian/control
+++ b/debian/control
@@ -51,11 +51,11 @@ Build-Depends:
  libelf-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
  libwayland-dev (>= 1.15.0) [linux-any],
  libwayland-egl-backend-dev (>= 1.15.0) [linux-any],
- llvm-17-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
- libclang-17-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
- libclang-cpp17-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
- libclc-17-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
- libclc-17 [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
+ llvm-18-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
+ libclang-18-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
+ libclang-cpp18-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
+ libclc-18-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
+ libclc-18 [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
  wayland-protocols (>= 1.34),
  zlib1g-dev,
  libglvnd-core-dev (>= 1.3.2),
@@ -64,8 +64,8 @@ Build-Depends:
  rustfmt [amd64 arm64 armel armhf loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x x32],
  bindgen (>= 0.66.1~) [amd64 arm64 armel armhf loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x x32],
  cbindgen [amd64 arm64 armel armhf loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x x32],
- llvm-spirv-17 [amd64 arm64 armel armhf loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x x32],
- libllvmspirvlib-17-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
+ llvm-spirv-18 [amd64 arm64 armel armhf loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x x32],
+ libllvmspirvlib-18-dev [amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32],
  librust-paste-dev [amd64 arm64 armhf ppc64 riscv64 x32],
  librust-syn-dev [amd64 arm64 armhf ppc64 riscv64 x32],
 Rules-Requires-Root: no
@@ -421,7 +421,7 @@ Section: libs
 Architecture: amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32
 Pre-Depends: ${misc:Pre-Depends}
 Depends:
- libclc-17,
+ libclc-18,
  ocl-icd-libopencl1 | libopencl1,
  ${shlibs:Depends},
  ${misc:Depends},
diff --git a/debian/rules b/debian/rules
index 7812fff..1c8375b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,7 +13,7 @@ DEB_HOST_ARCH_OS   ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
 DEB_HOST_ARCH_CPU  ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_CPU)
 
 # for finding the correct llvm-config when meson doesn't know about it yet
-LLVM_VERSION = 17
+LLVM_VERSION = 18
 export PATH:=/usr/lib/llvm-$(LLVM_VERSION)/bin/:$(PATH)
 
 export DEB_BUILD_MAINT_OPTIONS=optimize=-lto
diff --git a/pika-build-config/amd64-v3.sh b/pika-build-config/amd64-v3.sh
old mode 100644
new mode 100755
index aa46f1f..10285b4
--- a/pika-build-config/amd64-v3.sh
+++ b/pika-build-config/amd64-v3.sh
@@ -1,10 +1,10 @@
 #! /bin/bash
 export PIKA_BUILD_ARCH="amd64-v3"
 export DEBIAN_FRONTEND="noninteractive"
-export DEB_BUILD_MAINT_OPTIONS="-march=x86-64-v3 -O3"
-export DEB_CFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
-export DEB_CPPFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
-export DEB_CXXFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
-export DEB_LDFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
+export DEB_BUILD_MAINT_OPTIONS="optimize=+lto -march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
+export DEB_CFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
+export DEB_CPPFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
+export DEB_CXXFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
+export DEB_LDFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
 export DEB_BUILD_OPTIONS="nocheck notest terse"
 export DPKG_GENSYMBOLS_CHECK_LEVEL=0
diff --git a/pika-build-config/amd64-v3.sh.bak0 b/pika-build-config/amd64-v3.sh.bak0
new file mode 100644
index 0000000..aa46f1f
--- /dev/null
+++ b/pika-build-config/amd64-v3.sh.bak0
@@ -0,0 +1,10 @@
+#! /bin/bash
+export PIKA_BUILD_ARCH="amd64-v3"
+export DEBIAN_FRONTEND="noninteractive"
+export DEB_BUILD_MAINT_OPTIONS="-march=x86-64-v3 -O3"
+export DEB_CFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
+export DEB_CPPFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
+export DEB_CXXFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
+export DEB_LDFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3"
+export DEB_BUILD_OPTIONS="nocheck notest terse"
+export DPKG_GENSYMBOLS_CHECK_LEVEL=0
diff --git a/pika-build-config/amd64-v3.sh.bak1 b/pika-build-config/amd64-v3.sh.bak1
deleted file mode 100755
index 10285b4..0000000
--- a/pika-build-config/amd64-v3.sh.bak1
+++ /dev/null
@@ -1,10 +0,0 @@
-#! /bin/bash
-export PIKA_BUILD_ARCH="amd64-v3"
-export DEBIAN_FRONTEND="noninteractive"
-export DEB_BUILD_MAINT_OPTIONS="optimize=+lto -march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
-export DEB_CFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
-export DEB_CPPFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
-export DEB_CXXFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
-export DEB_LDFLAGS_MAINT_APPEND="-march=x86-64-v3 -O3 -flto -fuse-linker-plugin -falign-functions=32"
-export DEB_BUILD_OPTIONS="nocheck notest terse"
-export DPKG_GENSYMBOLS_CHECK_LEVEL=0