diff --git a/pkgs/applications/networking/cluster/fluxcd/update.sh b/pkgs/applications/networking/cluster/fluxcd/update.sh
index f463370e669..c1ce4b38156 100755
--- a/pkgs/applications/networking/cluster/fluxcd/update.sh
+++ b/pkgs/applications/networking/cluster/fluxcd/update.sh
@@ -14,7 +14,7 @@ SHA256=$(nix-prefetch-url --quiet --unpack https://github.com/fluxcd/flux2/archi
 SPEC_SHA256=$(nix-prefetch-url --quiet --unpack https://github.com/fluxcd/flux2/releases/download/${TAG}/manifests.tar.gz)
 
 setKV () {
-  sed -i "s/$1 = \".*\"/$1 = \"$2\"/" ./default.nix
+    sed -i "s|$1 = \".*\"|$1 = \"$2\"|" ./default.nix
 }
 
 setKV version ${VERSION}
diff --git a/pkgs/applications/networking/cluster/k3s/update.sh b/pkgs/applications/networking/cluster/k3s/update.sh
index db895af71c6..79432f06c23 100755
--- a/pkgs/applications/networking/cluster/k3s/update.sh
+++ b/pkgs/applications/networking/cluster/k3s/update.sh
@@ -45,7 +45,7 @@ CNIPLUGINS_SHA256=$(nix-prefetch-url --quiet --unpack \
     "https://github.com/rancher/plugins/archive/refs/tags/v${CNIPLUGINS_VERSION}.tar.gz")
 
 setKV () {
-  sed -i "s/$1 = \".*\"/$1 = \"$2\"/" ./default.nix
+    sed -i "s|$1 = \".*\"|$1 = \"$2\"|" ./default.nix
 }
 
 setKV k3sVersion ${K3S_VERSION}
diff --git a/pkgs/tools/virtualization/linode-cli/update.sh b/pkgs/tools/virtualization/linode-cli/update.sh
index 281d0e1df97..b31aa957423 100755
--- a/pkgs/tools/virtualization/linode-cli/update.sh
+++ b/pkgs/tools/virtualization/linode-cli/update.sh
@@ -21,7 +21,7 @@ VERSION=$(curl -s ${GITHUB_TOKEN:+"-u \":$GITHUB_TOKEN\""} \
 SHA256=$(nix-prefetch-url --quiet --unpack https://github.com/linode/linode-cli/archive/refs/tags/${VERSION}.tar.gz)
 
 setKV () {
-  sed -i "s/$1 = \".*\"/$1 = \"$2\"/" default.nix
+    sed -i "s|$1 = \".*\"|$1 = \"$2\"|" ./default.nix
 }
 
 setKV specVersion ${SPEC_VERSION}