diff --git a/eris/__main__.py b/eris/__main__.py
index 0474f98..2190c89 100755
--- a/eris/__main__.py
+++ b/eris/__main__.py
@@ -1157,8 +1157,7 @@ def install_all_tools():
     install_command = ["apt", "-y", "install"]  # debian / ubuntu
     if "ID=fedora\n" in os_release_lines:
         tools_.remove("lua-check")
-        renames = {"lua5.3": "lua", "python3-bandit": "bandit", "ruby3.1": "ruby",
-                   "xz-utils": "xz"}
+        renames = {"lua5.3": "lua", "python3-bandit": "bandit", "xz-utils": "xz"}
         tools_ = [renames.get(tool, tool) for tool in tools_]
         install_command = ["dnf", "-y", "install"]
     elif "ID=arch\n" in os_release_lines:
@@ -1166,8 +1165,8 @@ def install_all_tools():
         tools_.remove("python3-pdfminer")  # pdf2txt is not in arch
         tools_.remove("perl-doc")  # perldoc is in perl but not in the path
         tools_.remove("7zip")
-        renames = {"genisoimage": "cdrkit", "lua5.3": "lua", "ruby3.1": "ruby", "xz-utils": "xz",
-                   "g++": "gcc", "golang-go": "go", "lua-check": "luacheck", "php-cli": "php",
+        renames = {"genisoimage": "cdrkit", "lua5.3": "lua", "xz-utils": "xz", "g++": "gcc",
+                   "golang-go": "go", "lua-check": "luacheck", "php-cli": "php",
                    "pylint": "python-pylint", "python3-bandit": "bandit", "python3-mypy": "mypy"}
         tools_ = [renames.get(tool, tool) for tool in tools_]
         tools_ = ["python-" + tool[len("python3-"):] if tool.startswith("python3-") else tool
@@ -1176,8 +1175,8 @@ def install_all_tools():
     elif "ID=alpine\n" in os_release_lines:
         tools_.remove("python3-bandit")
         tools_.remove("wabt")
-        renames = {"genisoimage": "cdrkit", "lua5.3": "lua", "ruby3.1": "ruby", "xz-utils": "xz",
-                   "g++": "gcc", "golang-go": "go", "lua-check": "luacheck", "php-cli": "php",
+        renames = {"genisoimage": "cdrkit", "lua5.3": "lua", "xz-utils": "xz", "g++": "gcc",
+                   "golang-go": "go", "lua-check": "luacheck", "php-cli": "php",
                    "pylint": "py3-pylint", "tidy": "tidyhtml"}
         tools_ = [renames.get(tool, tool) for tool in tools_]
         tools_ = ["py3-" + tool[len("python3-"):] if tool.startswith("python3-") else tool
diff --git a/eris/tools.toml b/eris/tools.toml
index 7d4306e..06b624d 100644
--- a/eris/tools.toml
+++ b/eris/tools.toml
@@ -248,7 +248,7 @@ tools_for_extensions = [
   command = "cppcheck --error-exitcode=1"
 
 [ruby_syntax]
-  dependencies = ["ruby3.1"]
+  dependencies = ["ruby"]
   url = "http://www.ruby-lang.org/"
   command = "ruby -c"