diff --git a/.evergreen/config.in.yml b/.evergreen/config.in.yml
index f6a5524c048..49b487d555c 100644
--- a/.evergreen/config.in.yml
+++ b/.evergreen/config.in.yml
@@ -89,37 +89,33 @@ functions:
       params:
         binary: bash
         working_dir: src
+        add_expansions_to_env: true
         args:
           - .evergreen/activate-kms-venv.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
     - command: subprocess.exec
       params:
         background: true
         binary: bash
         working_dir: src
+        add_expansions_to_env: true
         args:
           - .evergreen/run-kmip-server.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
     - command: subprocess.exec
       params:
         background: true
         binary: bash
         working_dir: src
+        add_expansions_to_env: true
         args:
           - .evergreen/run-kms-servers.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
     - command: subprocess.exec
       params:
         background: true
         working_dir: src
         binary: bash
+        add_expansions_to_env: true
         args:
           - .evergreen/run-azure-kms-mock-server.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
 
   "bootstrap oidc":
     - command: ec2.assume_role
@@ -199,6 +195,7 @@ functions:
       params:
         working_dir: "src"
         timeout_secs: 300
+        add_expansions_to_env: true
         shell: bash
         script: |
           ${PREPARE_SHELL}
diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index 7cba77c4d7d..0366f0f041a 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -63,37 +63,33 @@ functions:
       params:
         binary: bash
         working_dir: src
+        add_expansions_to_env: true
         args:
           - .evergreen/activate-kms-venv.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
     - command: subprocess.exec
       params:
         background: true
         binary: bash
         working_dir: src
+        add_expansions_to_env: true
         args:
           - .evergreen/run-kmip-server.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
     - command: subprocess.exec
       params:
         background: true
         binary: bash
         working_dir: src
+        add_expansions_to_env: true
         args:
           - .evergreen/run-kms-servers.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
     - command: subprocess.exec
       params:
         background: true
         working_dir: src
         binary: bash
+        add_expansions_to_env: true
         args:
           - .evergreen/run-azure-kms-mock-server.sh
-        env:
-          DRIVERS_TOOLS: ${DRIVERS_TOOLS}
   bootstrap oidc:
     - command: ec2.assume_role
       params:
@@ -169,6 +165,7 @@ functions:
       params:
         working_dir: src
         timeout_secs: 300
+        add_expansions_to_env: true
         shell: bash
         script: |
           ${PREPARE_SHELL}