diff --git a/implementations/Rarr/driver.sh b/implementations/Rarr/driver.sh
index e31271eb..9858ec4b 100755
--- a/implementations/Rarr/driver.sh
+++ b/implementations/Rarr/driver.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 ENVNAME=ZI_Rarr
 
 # Standard bootstrapping
diff --git a/implementations/js/driver.sh b/implementations/js/driver.sh
index fd19aced..1821c3eb 100755
--- a/implementations/js/driver.sh
+++ b/implementations/js/driver.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 ENVNAME=ZI_js
 
 # Standard bootstrapping
diff --git a/implementations/jzarr/driver.sh b/implementations/jzarr/driver.sh
index 68450fb4..df8a830f 100755
--- a/implementations/jzarr/driver.sh
+++ b/implementations/jzarr/driver.sh
@@ -1,6 +1,4 @@
-# cd to this directory
-# https://stackoverflow.com/a/6393573/2700168
-
+#!/usr/bin/env bash
 ENVNAME=ZI_jzarr
 
 # Standard bootstrapping
diff --git a/implementations/n5-java/driver.sh b/implementations/n5-java/driver.sh
index e3693409..912e111f 100755
--- a/implementations/n5-java/driver.sh
+++ b/implementations/n5-java/driver.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 ENVNAME=ZI_n5_java
 
 # Standard bootstrapping
diff --git a/implementations/pyn5/driver.sh b/implementations/pyn5/driver.sh
index d13ea64c..290d5a1a 100755
--- a/implementations/pyn5/driver.sh
+++ b/implementations/pyn5/driver.sh
@@ -1,7 +1,4 @@
 #!/usr/bin/env bash
-#
-#
-
 ENVNAME=ZI_pyn5
 
 # Standard bootstrapping
diff --git a/implementations/tensorstore/driver.sh b/implementations/tensorstore/driver.sh
index 7d4c0951..2abbfc57 100755
--- a/implementations/tensorstore/driver.sh
+++ b/implementations/tensorstore/driver.sh
@@ -1,7 +1,4 @@
 #!/usr/bin/env bash
-#
-#
-
 ENVNAME=ZI_tensorstore
 
 # Standard bootstrapping
diff --git a/implementations/xtensor_zarr/driver.sh b/implementations/xtensor_zarr/driver.sh
index 0f3dd0ee..8cf4ea6b 100755
--- a/implementations/xtensor_zarr/driver.sh
+++ b/implementations/xtensor_zarr/driver.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 ENVNAME=ZI_xtensor_zarr
 
 # Standard bootstrapping
diff --git a/implementations/z5py/driver.sh b/implementations/z5py/driver.sh
index 566bdb98..ffc9ae6f 100755
--- a/implementations/z5py/driver.sh
+++ b/implementations/z5py/driver.sh
@@ -1,7 +1,4 @@
 #!/usr/bin/env bash
-#
-#
-
 ENVNAME=ZI_z5py
 
 # Standard bootstrapping
diff --git a/implementations/zarr-python/driver.sh b/implementations/zarr-python/driver.sh
index 15a3aaff..5c98dc29 100755
--- a/implementations/zarr-python/driver.sh
+++ b/implementations/zarr-python/driver.sh
@@ -1,7 +1,4 @@
 #!/usr/bin/env bash
-#
-#
-
 ENVNAME=ZI_zarr-python
 
 # Standard bootstrapping
diff --git a/implementations/zarrita/driver.sh b/implementations/zarrita/driver.sh
index 2da78393..480b393d 100755
--- a/implementations/zarrita/driver.sh
+++ b/implementations/zarrita/driver.sh
@@ -1,6 +1,4 @@
 #!/usr/bin/env bash
-#
-
 ENVNAME=ZI_zarrita
 
 # Standard bootstrapping