diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index 3a7b98985d..0f734bc039 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -282,7 +282,7 @@ functions:
             DRIVER="${DRIVER}" \
             I18N="${I18N}" \
             TEST_I18N_FALLBACKS="${TEST_I18N_FALLBACKS}" \
-            ./egos .evergreen/run-tests-docker.sh
+            ./egos .evergreen/run-tests.sh
 
   "fix absolute paths":
     - command: shell.exec
diff --git a/.evergreen/config/commands.yml.erb b/.evergreen/config/commands.yml.erb
index 9cc142fddf..311c3bfe0b 100644
--- a/.evergreen/config/commands.yml.erb
+++ b/.evergreen/config/commands.yml.erb
@@ -256,7 +256,7 @@ functions:
             DRIVER="${DRIVER}" \
             I18N="${I18N}" \
             TEST_I18N_FALLBACKS="${TEST_I18N_FALLBACKS}" \
-            ./egos .evergreen/run-tests-docker.sh
+            ./egos .evergreen/run-tests.sh
 
   "fix absolute paths":
     - command: shell.exec
diff --git a/docs/release-notes/mongoid-8.0.txt b/docs/release-notes/mongoid-8.0.txt
index c9251c7fb8..a056876672 100644
--- a/docs/release-notes/mongoid-8.0.txt
+++ b/docs/release-notes/mongoid-8.0.txt
@@ -767,3 +767,40 @@ Support for individually caching criteria objects has been dropped in Mongoid 8.
 
 In order to get caching functionality, enable the Mongoid Query Cache. See the
 section on :ref:`Query Cache <query-cache>` for more details.
+
+
+BSON 5 and BSON::Decimal128 Fields
+----------------------------------
+
+When BSON 4 or earlier is present, any field declared as BSON::Decimal128 will
+return a BSON::Decimal128 value. When BSON 5 is present, however, any field
+declared as BSON::Decimal128 will return a BigDecimal value by default.
+
+.. code-block:: ruby
+
+  class Model
+    include Mongoid::Document
+
+    field :decimal_field, type: BSON::Decimal128
+  end
+
+  # under BSON <= 4
+  Model.first.decimal_field.class #=> BSON::Decimal128
+
+  # under BSON >= 5
+  Model.first.decimal_field.class #=> BigDecimal
+
+If you need literal BSON::Decimal128 values with BSON 5, you may instruct
+Mongoid to allow literal BSON::Decimal128 fields:
+
+.. code-block:: ruby
+
+  Model.first.decimal_field.class #=> BigDecimal
+
+  Mongoid.allow_bson5_decimal128 = true
+  Model.first.decimal_field.class #=> BSON::Decimal128
+
+.. note::
+
+  The ``allow_bson5_decimal128`` option only has any effect under
+  BSON 5 and later. BSON 4 and earlier ignore the setting entirely.
diff --git a/lib/mongoid/version.rb b/lib/mongoid/version.rb
index c147284689..6f75c3de88 100644
--- a/lib/mongoid/version.rb
+++ b/lib/mongoid/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Mongoid
-  VERSION = "8.0.5"
+  VERSION = "8.0.6"
 end