diff --git a/contrib/guix/README.md b/contrib/guix/README.md
index 23050cec48..be0672cbd3 100644
--- a/contrib/guix/README.md
+++ b/contrib/guix/README.md
@@ -259,7 +259,7 @@ details.
   Override the number of jobs to run simultaneously, you might want to do so on
   a memory-limited machine. This may be passed to:
 
-  - `guix` build commands as in `guix environment --cores="$JOBS"`
+  - `guix` build commands as in `guix shell --cores="$JOBS"`
   - `make` as in `make --jobs="$JOBS"`
   - `xargs` as in `xargs -P"$JOBS"`
 
@@ -301,7 +301,7 @@ details.
 
 * _**ADDITIONAL_GUIX_ENVIRONMENT_FLAGS**_
 
-  Additional flags to be passed to the invocation of `guix environment` inside
+  Additional flags to be passed to the invocation of `guix shell` inside
   `guix time-machine`.
 
 # Choosing your security model
diff --git a/contrib/guix/guix-build b/contrib/guix/guix-build
index 0d7ecfa271..2dd61b4dbd 100755
--- a/contrib/guix/guix-build
+++ b/contrib/guix/guix-build
@@ -365,7 +365,7 @@ EOF
         # Run the build script 'contrib/guix/libexec/build.sh' in the build
         # container specified by 'contrib/guix/manifest.scm'.
         #
-        # Explanation of `guix environment` flags:
+        # Explanation of `guix shell` flags:
         #
         #   --container        run command within an isolated container
         #
@@ -428,7 +428,7 @@ EOF
         #    more information.
         #
         # shellcheck disable=SC2086,SC2031
-        time-machine environment --manifest="${PWD}/contrib/guix/manifest.scm" \
+        time-machine shell --manifest="${PWD}/contrib/guix/manifest.scm" \
                                  --container \
                                  --pure \
                                  --no-cwd \
diff --git a/contrib/guix/guix-codesign b/contrib/guix/guix-codesign
index 445ee91172..3ce0381865 100755
--- a/contrib/guix/guix-codesign
+++ b/contrib/guix/guix-codesign
@@ -286,7 +286,7 @@ EOF
         # Run the build script 'contrib/guix/libexec/build.sh' in the build
         # container specified by 'contrib/guix/manifest.scm'.
         #
-        # Explanation of `guix environment` flags:
+        # Explanation of `guix shell` flags:
         #
         #   --container        run command within an isolated container
         #
@@ -343,7 +343,7 @@ EOF
         #    more information.
         #
         # shellcheck disable=SC2086,SC2031
-        time-machine environment --manifest="${PWD}/contrib/guix/manifest.scm" \
+        time-machine shell --manifest="${PWD}/contrib/guix/manifest.scm" \
                                  --container \
                                  --pure \
                                  --no-cwd \
diff --git a/contrib/guix/libexec/build.sh b/contrib/guix/libexec/build.sh
index 2618bfe226..f963578db5 100755
--- a/contrib/guix/libexec/build.sh
+++ b/contrib/guix/libexec/build.sh
@@ -5,7 +5,7 @@ export TZ=UTC
 
 # Although Guix _does_ set umask when building its own packages (in our case,
 # this is all packages in manifest.scm), it does not set it for `guix
-# environment`. It does make sense for at least `guix environment --container`
+# shell`. It does make sense for at least `guix shell --container`
 # to set umask, so if that change gets merged upstream and we bump the
 # time-machine to a commit which includes the aforementioned change, we can
 # remove this line.
diff --git a/contrib/guix/libexec/codesign.sh b/contrib/guix/libexec/codesign.sh
index 88ee195e83..91183fb53c 100755
--- a/contrib/guix/libexec/codesign.sh
+++ b/contrib/guix/libexec/codesign.sh
@@ -5,7 +5,7 @@ export TZ=UTC
 
 # Although Guix _does_ set umask when building its own packages (in our case,
 # this is all packages in manifest.scm), it does not set it for `guix
-# environment`. It does make sense for at least `guix environment --container`
+# shell`. It does make sense for at least `guix shell --container`
 # to set umask, so if that change gets merged upstream and we bump the
 # time-machine to a commit which includes the aforementioned change, we can
 # remove this line.