diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index f802596c3..a78f1d54f 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -50,6 +50,7 @@ functions:
     # Make an evergreen exapanstion file with dynamic values
     - command: shell.exec
       params:
+        shell: bash
         working_dir: "src"
         script: |
            # Get the current unique version of this checkout
diff --git a/.evergreen/config/functions.yml.erb b/.evergreen/config/functions.yml.erb
index 5629d2a54..ebb8f41a7 100644
--- a/.evergreen/config/functions.yml.erb
+++ b/.evergreen/config/functions.yml.erb
@@ -15,6 +15,7 @@ functions:
     # Make an evergreen exapanstion file with dynamic values
     - command: shell.exec
       params:
+        shell: bash
         working_dir: "src"
         script: |
            # Get the current unique version of this checkout
diff --git a/bson.gemspec b/bson.gemspec
index a2171047e..e7bc0120d 100644
--- a/bson.gemspec
+++ b/bson.gemspec
@@ -34,11 +34,9 @@ Gem::Specification.new do |s|
     s.platform   = 'java'
   end
 
-  if RUBY_VERSION > '3.2.99'
-    s.add_dependency 'base64'
-    s.add_dependency 'bigdecimal'
-    s.add_dependency 'ostruct'
-  end
+  s.add_dependency 'base64'
+  s.add_dependency 'bigdecimal'
+  s.add_dependency 'ostruct'
 
   s.test_files = Dir.glob('spec/**/*')