diff --git a/bazel_tools/rules-nixpkgs-llvm-cov.patch b/bazel_tools/rules-nixpkgs-llvm-cov.patch
deleted file mode 100644
index 1ae7e2011dc8..000000000000
--- a/bazel_tools/rules-nixpkgs-llvm-cov.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/nixpkgs/toolchains/cc.nix b/nixpkgs/toolchains/cc.nix
-index e2c766a..17ced5b 100644
---- a/nixpkgs/toolchains/cc.nix
-+++ b/nixpkgs/toolchains/cc.nix
-@@ -68,7 +68,7 @@ in
-       # Determine toolchain tool paths.
-       #
-       # If a tool is not available then we use `bin/false` as a stand-in.
--      declare -A TOOLS=( [ar]=ar [cpp]=cpp [dwp]=dwp [gcc]=cc [gcov]=gcov [ld]=ld [nm]=nm [objcopy]=objcopy [objdump]=objdump [strip]=strip )
-+      declare -A TOOLS=( [ar]=ar [cpp]=cpp [dwp]=dwp [gcc]=cc [gcov]=gcov [llvm-cov]=llvm-cov [ld]=ld [nm]=nm [objcopy]=objcopy [objdump]=objdump [strip]=strip )
-       TOOL_NAMES=(''${!TOOLS[@]})
-       declare -A TOOL_PATHS=()
-       for tool_name in ''${!TOOLS[@]}; do
diff --git a/deps.bzl b/deps.bzl
index a00fb05ddb73..ea1c92f28204 100644
--- a/deps.bzl
+++ b/deps.bzl
@@ -43,8 +43,8 @@ rules_haskell_patches = [
     "@com_github_digital_asset_daml//bazel_tools:haskell-opt.patch",
     "@com_github_digital_asset_daml//bazel_tools:haskell-ghc-8.10.7-bindist.patch",
 ]
-rules_nixpkgs_version = "c40b35f73e5ab1c0096d95abf63027a3b8054061"
-rules_nixpkgs_sha256 = "47fffc870a25d82deedb887c32481a43a12f56b51e5002773046f81fbe3ea9df"
+rules_nixpkgs_version = "81f61c4b5afcf50665b7073f7fce4c1755b4b9a3"
+rules_nixpkgs_sha256 = "33fd540d0283cf9956d0a5a640acb1430c81539a84069114beaf9640c96d221a"
 rules_nixpkgs_patches = [
     # On CI and locally we observe occasional segmantation faults
     # of nix. A known issue since Nix 2.2.2 is that HTTP2 support