diff --git a/packages/racket/8.3.0/build.sh b/packages/racket/8.3.0/build.sh
deleted file mode 100644
index 187aef4..0000000
--- a/packages/racket/8.3.0/build.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env bash
-
-# curl racket 8.3 linux installation shell file
-curl -L 'https://download.racket-lang.org/installers/8.3/racket-8.3-x86_64-linux-cs.sh' -o racket.sh
-
-# provide settings "no" "4" and "<CR>" to racket.sh
-echo "no
-4
-" | sh racket.sh
-
diff --git a/packages/racket/8.3.0/environment b/packages/racket/8.3.0/environment
deleted file mode 100644
index 1a30eef..0000000
--- a/packages/racket/8.3.0/environment
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-# Path to racket binary
-export PATH=$PWD/bin:$PATH
-export RACKET_PATH=$PWD/racket
\ No newline at end of file
diff --git a/packages/racket/8.3.0/metadata.json b/packages/racket/8.3.0/metadata.json
deleted file mode 100644
index 14b902c..0000000
--- a/packages/racket/8.3.0/metadata.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "language": "racket",
-    "version": "8.3.0",
-    "aliases": ["rkt"]
-}
diff --git a/packages/racket/8.3.0/run b/packages/racket/8.3.0/run
deleted file mode 100644
index 227bfaa..0000000
--- a/packages/racket/8.3.0/run
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-"$RACKET_PATH"/bin/racket "$@"
\ No newline at end of file
diff --git a/packages/racket/8.3.0/test.rkt b/packages/racket/8.3.0/test.rkt
deleted file mode 100644
index 7e0825c..0000000
--- a/packages/racket/8.3.0/test.rkt
+++ /dev/null
@@ -1,3 +0,0 @@
-#lang racket
-
-(display "OK")
\ No newline at end of file
diff --git a/packages/retina/1.2.0/build.sh b/packages/retina/1.2.0/build.sh
deleted file mode 100644
index 9712458..0000000
--- a/packages/retina/1.2.0/build.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-
-# get dotnet 2.2.8 as a dependency for retina
-curl "https://download.visualstudio.microsoft.com/download/pr/022d9abf-35f0-4fd5-8d1c-86056df76e89/477f1ebb70f314054129a9f51e9ec8ec/dotnet-sdk-2.2.207-linux-x64.tar.gz" -Lo dotnet.tar.gz
-tar xzf dotnet.tar.gz --strip-components=1
-rm dotnet.tar.gz
-
-export DOTNET_CLI_HOME=$PWD
-./dotnet new console -o cache_application
-
-rm -rf cache_application
-
-# curl retina version 1.2.0
-curl -L "https://github.com/m-ender/retina/releases/download/v1.2.0/retina-linux-x64.tar.gz" -o retina.tar.xz
-tar xf retina.tar.xz --strip-components=1
-rm retina.tar.xz
-
-# move the libhostfxr.so file to the current directory so we don't have to set DOTNET_ROOT
-mv host/fxr/2.2.8/libhostfxr.so libhostfxr.so
-
-# give execute permissions to retina
-chmod +x Retina
\ No newline at end of file
diff --git a/packages/retina/1.2.0/environment b/packages/retina/1.2.0/environment
deleted file mode 100644
index d9b5a4d..0000000
--- a/packages/retina/1.2.0/environment
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export PATH=$PWD/bin:$PATH
-export RETINA_PATH=$PWD
\ No newline at end of file
diff --git a/packages/retina/1.2.0/metadata.json b/packages/retina/1.2.0/metadata.json
deleted file mode 100644
index f632d6b..0000000
--- a/packages/retina/1.2.0/metadata.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "language": "retina",
-    "version": "1.2.0",
-    "aliases": ["ret"]
-}
diff --git a/packages/retina/1.2.0/run b/packages/retina/1.2.0/run
deleted file mode 100644
index bb64b05..0000000
--- a/packages/retina/1.2.0/run
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-# retina doesn't take interactive stdin and doesn't take args either
-
-# save the file for later
-file="$1"
-
-# remove file from $@
-shift
-
-# join arguments on newline
-stdin=`printf "%s\n" "$@"`
-
-# pass stdin into Retina command with file as argument
-echo "$stdin" | "$RETINA_PATH"/Retina "$file"
\ No newline at end of file
diff --git a/packages/retina/1.2.0/test.ret b/packages/retina/1.2.0/test.ret
deleted file mode 100644
index c4b21da..0000000
--- a/packages/retina/1.2.0/test.ret
+++ /dev/null
@@ -1 +0,0 @@
-K`OK
\ No newline at end of file
diff --git a/readme.md b/readme.md
index ce66d22..bc19ab4 100644
--- a/readme.md
+++ b/readme.md
@@ -85,7 +85,6 @@ The following are approved and endorsed extensions/utilities to the core Piston
 -   [Piston4J](https://github.com/the-codeboy/Piston4J), a Java wrapper for accessing the Piston API.
 -   [Pyston](https://github.com/ffaanngg/pyston), a Python wrapper for accessing the Piston API.
 -   [Go-Piston](https://github.com/milindmadhukar/go-piston), a Golang wrapper for accessing the Piston API.
--   [piston_rs](https://github.com/Jonxslays/piston_rs), a Rust wrapper for accessing the Piston API.
 
 <br>
 
@@ -382,9 +381,7 @@ Content-Type: application/json
 `pyth`,
 `python`,
 `python2`,
-`racket`,
 `raku`,
-`retina`,
 `rockstar`,
 `rscript`,
 `ruby`,