diff --git a/.travis.yml b/.travis.yml
index 7ff2705..8a9d5b7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: c
 script: asdf plugin-test php https://github.com/odarriba/asdf-php.git
 before_install:
-- echo `curl -u $GITHUB_API_USER:$GITHUB_API_KEY-s https://api.github.com/repos/php/php-src/git/refs/tags`
 - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; fi
 - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install freetype bison27 gettext
   icu4c jpeg libpng openssl readline homebrew/dupes/zlib curl; fi
diff --git a/bin/install b/bin/install
index 4d96116..8f051b4 100644
--- a/bin/install
+++ b/bin/install
@@ -208,38 +208,4 @@ get_php_version() {
     fi
 }
 
-# get_target() {
-#     os=$(uname -s)
-#
-#     # If on OSX (Darwin) then the target is macosx
-#     if [ $os = "Darwin" ]; then
-#         echo "macosx"
-#     else # Otherwise we assume Linux
-#         echo "linux"
-#     fi
-# }
-
-#version_5x_or_greater() {
-#     version=$1
-#     IFS='.' read -a version_array <<< "$version"
-#     major_version="${version_array[0]}"
-#
-#     if (( $major_version >= 5 )); then
-#         return 0
-#     else
-#         return 1
-#     fi
-#}
-
-#version_5_2x_or_greater() {
-#     version=$1
-#     IFS='.' read -a version_array <<< "$version"
-#     major_minor_version="${version_array[0]}0${version_array[1]}"
-#     if (( $major_minor_version >= 502 )); then
-#         return 0
-#     else
-#         return 1
-#     fi
-#}
-
 install_php $ASDF_INSTALL_TYPE $ASDF_INSTALL_VERSION $ASDF_INSTALL_PATH
diff --git a/bin/list-all b/bin/list-all
index a1be77e..c0c3511 100755
--- a/bin/list-all
+++ b/bin/list-all
@@ -1,6 +1,12 @@
 #!/usr/bin/env bash
 
-versions=$(curl -s https://api.github.com/repos/php/php-src/git/refs/tags | # Fetch all tags
+if [ "$GITHUB_API_USER" = "" ] || [ "$GITHUB_API_KEY" = "" ]; then
+  auth=""
+else
+  auth="-u $GITHUB_API_USER:$GITHUB_API_KEY"
+fi
+
+versions=$(curl $auth -s https://api.github.com/repos/php/php-src/git/refs/tags | # Fetch all tags
           grep '"ref":' | # Filter by refs
           grep 'php-' | # Filter only those related to php-xxxx
           grep -Ev "beta|alpha|RC" | # Remove betas, alphas and RCs