diff --git a/pkgs/development/compilers/rust/1_45.nix b/pkgs/development/compilers/rust/1_45.nix
index b4d887f2e96..25ecb1dc001 100644
--- a/pkgs/development/compilers/rust/1_45.nix
+++ b/pkgs/development/compilers/rust/1_45.nix
@@ -33,7 +33,7 @@ import ./default.nix {
   # building
   bootstrapVersion = "1.44.1";
 
-  # fetch hashes by running `print-hashes.sh 1.45.0`
+  # fetch hashes by running `print-hashes.sh ${bootstrapVersion}`
   bootstrapHashes = {
     i686-unknown-linux-gnu = "e69689b0a1b66599cf83e7dd54f839419007e44376195e93e301a3175da3d854";
     x86_64-unknown-linux-gnu = "a41df89a461a580536aeb42755e43037556fba2e527dd13a1e1bb0749de28202";
diff --git a/pkgs/development/compilers/rust/1_48.nix b/pkgs/development/compilers/rust/1_48.nix
index 6b4b10f12d3..fff02b9bf80 100644
--- a/pkgs/development/compilers/rust/1_48.nix
+++ b/pkgs/development/compilers/rust/1_48.nix
@@ -35,7 +35,7 @@ import ./default.nix {
   # building
   bootstrapVersion = "1.47.0";
 
-  # fetch hashes by running `print-hashes.sh 1.45.2`
+  # fetch hashes by running `print-hashes.sh ${bootstrapVersion}`
   bootstrapHashes = {
     i686-unknown-linux-gnu = "84bf092130ea5216fc701871e633563fc1c01b6528f60cb0767e96cd8eec30bf";
     x86_64-unknown-linux-gnu = "d0e11e1756a072e8e246b05d54593402813d047d12e44df281fbabda91035d96";