diff --git a/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-12.3.0.eb b/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-12.3.0.eb
index 26018c7bef81..7960a1ae6e4d 100644
--- a/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-12.3.0.eb
+++ b/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-12.3.0.eb
@@ -16,8 +16,8 @@ builddependencies = [
 # the system also needs to provide (new enough versions of) these dependencies
 dependencies = [
     ('Python', '3.11.3'),
-    ('libxslt', '1.1.38'),
-    ('libxml2', '2.11.4'),
+    ('libxslt', '1.1.38'), # Required by lxml, which is installed by ReFrame's bootstrap installer
+    ('libxml2', '2.11.4'), # Required by lxml, which is installed by ReFrame's bootstrap installer
 ]
 
 use_pip = True
diff --git a/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-13.2.0.eb b/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-13.2.0.eb
index 5bad59e87035..0a85c4d2b4e3 100644
--- a/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-13.2.0.eb
+++ b/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2-GCCcore-13.2.0.eb
@@ -16,8 +16,8 @@ builddependencies = [
 # the system also needs to provide (new enough versions of) these dependencies
 dependencies = [
     ('Python', '3.11.5'),
-    ('libxslt', '1.1.38'),
-    ('libxml2', '2.11.5'),
+    ('libxslt', '1.1.38'), # Required by lxml, which is installed by ReFrame's bootstrap installer
+    ('libxml2', '2.11.4'), # Required by lxml, which is installed by ReFrame's bootstrap installer
 ]
 
 use_pip = True
diff --git a/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2.eb b/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2.eb
index c99bbfba4c1f..fd4a336660e7 100644
--- a/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2.eb
+++ b/easybuild/easyconfigs/r/ReFrame/ReFrame-4.6.2.eb
@@ -10,6 +10,7 @@ toolchain = SYSTEM
 
 allow_system_deps = [('Python', SYS_PYTHON_VERSION)]
 
+# Required by lxml, which is installed by ReFrame's bootstrap installer
 osdependencies = [
     ('libxml2'),
     ('libxslt'),