diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3b741fe..faca437 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,9 +9,9 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set up cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: /var/apt/cache/archives
           key: ${{runner.os}}-packages
diff --git a/C/C#.cs b/CSharp/C#.cs
similarity index 100%
rename from C/C#.cs
rename to CSharp/C#.cs
diff --git a/Makefile b/Makefile
index 67a34fa..b1d3d61 100644
--- a/Makefile
+++ b/Makefile
@@ -59,7 +59,7 @@ benchmarks = BENCHMARKS.md
 commands = $(shell awk -F[:,] '{printf $$2" "}' t/tests.json)
 
 ## Compile all languages
-all: c cpp crystal cs d dart delphi go java kotlin nim pascal rust scala vala
+all: c cpp crystal cs d dart go java kotlin nim pascal rust scala vala
 
 c: C/C.c; $(CC) $(CFLAGS) -o $(<:.c=.out) $<
 
@@ -67,7 +67,7 @@ cpp: C/C++.cpp; $(CPP) $(CPPFLAGS) -o $(<:.cpp=.out) $<
 
 crystal: Crystal/Crystal.cr; $(CRYSTAL) $(CRYSTALFLAGS) -o $(<:.cr=.out) $<
 
-cs: C/C\#.cs; $(CSC) $(CSCFLAGS) -out:$(<:.cs=.out) $<
+cs: CSharp/C\#.cs; $(CSC) $(CSCFLAGS) -out:$(<:.cs=.out) $<
 
 d: D/D.d; $(DC) $(DCFLAGS) -of=$(<:.d=.out) $<
 
diff --git a/t/tests.json b/t/tests.json
index 80afb33..2a1ddbe 100644
--- a/t/tests.json
+++ b/t/tests.json
@@ -1,7 +1,7 @@
 {
     "Awk": "awk -f Awk/Awk.awk",
     "Bash": "bash --noprofile --norc Shell/Bash.sh",
-    "C#": "mono C/C#.out",
+    "C#": "mono CSharp/C#.out",
     "C++": "C/C++.out",
     "CMake": "cmake -P CMake/CMake.cmake 2>&1",
     "C": "C/C.out",
diff --git a/t/tests.t b/t/tests.t
index 88f8043..fa3d76a 100755
--- a/t/tests.t
+++ b/t/tests.t
@@ -1,6 +1,5 @@
 #!/usr/bin/env perl
 
-use experimental 'for_list';
 use JSON::Parse 'json_file_to_perl';
 use Test::More;
 
@@ -13,7 +12,7 @@ EOF
 
 plan tests => @ARGV ? $#ARGV + 1 : scalar keys %$tests;
 
-foreach my($lang, $cmd) (%$tests) {
+while (my($lang, $cmd) = each %$tests) {
     # If arguments are passed, run only the
     # tests for the languages listed in them
     @ARGV && next unless grep m/^\Q$lang\E$/i, @ARGV;