diff --git a/.github/release-canary-v3 b/.github/release-canary-v3
index 7ed6ff8..1e8b314 100644
--- a/.github/release-canary-v3
+++ b/.github/release-canary-v3
@@ -1 +1 @@
-5
+6
diff --git a/debian/rules b/debian/rules
index aa88414..5f93d50 100755
--- a/debian/rules
+++ b/debian/rules
@@ -9,7 +9,7 @@ export PIKA_BUILD_ARCH = $(shell cat ../pika-build-arch)
 override_dh_prep:
 # amd64 build prep
 ifeq (amd64-v3,$(PIKA_BUILD_ARCH))
-export RUSTFLAGS = "-C" "target-cpu=x86-64-v3" "-C" "linker-plugin-lto" "-C" "opt-level=3"
+export RUSTFLAGS = -C target-cpu=x86-64-v3 -C linker-plugin-lto -C opt-level=3
 endif
 
 BUILDFLAGS := --release