diff --git a/stack.yaml b/stack.yaml
index c8d78b845..83d93eccd 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -4,8 +4,6 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-# stack seems to enable this by default now, basically disabling bounds checks. Force it off.
-#allow-newer: false
 #resolver: nightly-2020-01-31
 resolver: lts-15.4
 
diff --git a/stack8.0.yaml b/stack8.0.yaml
index 0648c0e8f..adfff985c 100644
--- a/stack8.0.yaml
+++ b/stack8.0.yaml
@@ -1,8 +1,5 @@
 # stack build plan using GHC 8.0.2
 
-# stack seems to enable this by default now, basically disabling bounds checks. Force it off.
-#allow-newer: false
-
 resolver: lts-9.21
 
 packages:
diff --git a/stack8.10.yaml b/stack8.10.yaml
index 86117b397..6089c659d 100644
--- a/stack8.10.yaml
+++ b/stack8.10.yaml
@@ -4,9 +4,6 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-# stack seems to enable this by default now, basically disabling bounds checks. Force it off.
-#allow-newer: false
-
 ###############################################################################
 # from https://github.com/DanBurton/stack-setup-info-gen/tree/master/output:
 setup-info:
diff --git a/stack8.2.yaml b/stack8.2.yaml
index 862b61791..459178d32 100644
--- a/stack8.2.yaml
+++ b/stack8.2.yaml
@@ -4,9 +4,6 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-# stack seems to enable this by default now, basically disabling bounds checks. Force it off.
-#allow-newer: false
-
 resolver: lts-11.22
 
 packages:
diff --git a/stack8.4.yaml b/stack8.4.yaml
index 956428770..c32bf942c 100644
--- a/stack8.4.yaml
+++ b/stack8.4.yaml
@@ -4,9 +4,6 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-# stack seems to enable this by default now, basically disabling bounds checks. Force it off.
-#allow-newer: false
-
 resolver: lts-12.26
 
 packages:
diff --git a/stack8.6.yaml b/stack8.6.yaml
index c10b9f6d6..4110fc8b8 100644
--- a/stack8.6.yaml
+++ b/stack8.6.yaml
@@ -4,9 +4,6 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-# stack seems to enable this by default now, basically disabling bounds checks. Force it off.
-#allow-newer: false
-
 resolver: lts-14.16
 
 packages: