diff --git a/bin/fresh b/bin/fresh
index e577d51..c151d63 100755
--- a/bin/fresh
+++ b/bin/fresh
@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
+set -e
 
 FRESH_RCFILE="${FRESH_RCFILE:-$HOME/.freshrc}"
 FRESH_PATH="${FRESH_PATH:-$HOME/.fresh}"
diff --git a/install.sh b/install.sh
index 47b566f..c054ab1 100755
--- a/install.sh
+++ b/install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Install fresh with the following command:
 #
diff --git a/spec/fresh_spec.rb b/spec/fresh_spec.rb
index ed0834d..8a7a98f 100644
--- a/spec/fresh_spec.rb
+++ b/spec/fresh_spec.rb
@@ -1426,7 +1426,7 @@
       let(:path) do
         capture(:stdout) do
           system <<-EOF
-/bin/bash -c "$(
+/usr/bin/env bash -c "$(
 cat <<'SH'
   export PATH=/usr/bin
   source #{shell_sh_path}
@@ -1477,7 +1477,7 @@
 
         path = capture(:stdout) do
           system <<-EOF
-/bin/bash -c "$(
+/usr/bin/env bash -c "$(
 cat <<'SH'
   export PATH=/usr/bin
   source #{shell_sh_path}
@@ -1498,7 +1498,7 @@
         run_fresh
         out = capture(:stdout) do
           system <<-EOF
-/bin/bash -c "$(
+/usr/bin/env bash -c "$(
 cat <<'SH'
   source #{shell_sh_path}
   echo "$__FRESH_BIN_PATH__"
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index d7c6107..da9184c 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -127,7 +127,8 @@ def stub_curl(*args)
   options.assert_valid_keys :error
 
   template = <<-ERB.strip_heredoc
-    #!/bin/bash -e
+    #!/usr/bin/env bash
+    set -e
 
     echo curl >> <%= curl_log_path %>
 
diff --git a/spec/support/bin/git b/spec/support/bin/git
index 81043b7..b54c453 100755
--- a/spec/support/bin/git
+++ b/spec/support/bin/git
@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
+set -e
 
 echo cd "$(pwd)" >> $SANDBOX_PATH/git.log
 echo git "$@" >> $SANDBOX_PATH/git.log