diff --git a/abc177/Cargo.lock b/abc177/Cargo.lock
index d9a9d8b16..7d3b8a222 100644
--- a/abc177/Cargo.lock
+++ b/abc177/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "abc177"
 version = "0.1.0"
@@ -7,6 +9,7 @@ dependencies = [
  "alga",
  "ascii",
  "bitset-fixed",
+ "competitive-library",
  "either",
  "fixedbitset",
  "getrandom",
@@ -17,7 +20,6 @@ dependencies = [
  "lazy_static",
  "libm",
  "maplit",
- "my_crate",
  "nalgebra",
  "ndarray",
  "num",
@@ -108,6 +110,10 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "competitive-library"
+version = "0.1.0"
+
 [[package]]
 name = "either"
 version = "1.6.0"
@@ -230,51 +236,6 @@ version = "2.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
 
-[[package]]
-name = "my_crate"
-version = "0.1.0"
-dependencies = [
- "alga",
- "ascii",
- "bitset-fixed",
- "either",
- "fixedbitset",
- "getrandom",
- "im-rc",
- "indexmap",
- "itertools",
- "itertools-num",
- "lazy_static",
- "libm",
- "maplit",
- "nalgebra",
- "ndarray",
- "num",
- "num-bigint",
- "num-complex",
- "num-derive",
- "num-integer",
- "num-iter",
- "num-rational",
- "num-traits",
- "ordered-float",
- "permutohedron",
- "petgraph",
- "proconio",
- "rand",
- "rand_chacha",
- "rand_core",
- "rand_distr",
- "rand_hc",
- "rand_pcg",
- "regex",
- "rustc-hash",
- "smallvec",
- "superslice",
- "text_io",
- "whiteread",
-]
-
 [[package]]
 name = "nalgebra"
 version = "0.20.0"
@@ -397,9 +358,9 @@ dependencies = [
 
 [[package]]
 name = "ordered-float"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3741934be594d77de1c8461ebcbbe866f585ea616a9753aa78f2bdc69f0e4579"
+checksum = "3305af35278dd29f46fcdd139e0b1fbfae2153f0e5928b39b035542dd31e37b7"
 dependencies = [
  "num-traits",
 ]
diff --git a/abc177/Cargo.toml b/abc177/Cargo.toml
index 78a7c4d90..2ec15f5fc 100644
--- a/abc177/Cargo.toml
+++ b/abc177/Cargo.toml
@@ -62,7 +62,7 @@ petgraph = "0.5.0"
 indexmap = "1.3.2"
 regex = "1.3.6"
 lazy_static = "1.4.0"
-ordered-float = "1.0.2"
+ordered-float = "1.1.1"
 ascii = "1.0.0"
 permutohedron = "0.2.4"
 superslice = "1.0.0"