diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index c7b81e5aa9..163957c859 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -2669,18 +2669,21 @@ buildvariants:
       - name: "test-atlas-data-lake"
 
   - matrix_name: "tests-36-with-zlib-support"
+    tags: ["pullrequest"]
     matrix_spec: { version: ["3.6"], os-ssl-32: "*" }
     display_name: "${version} ${os-ssl-32}"
     tasks:
       - name: ".test !.enterprise-auth !.snappy !.zstd"
 
   - matrix_name: "tests-40-with-zlib-support"
+    tags: ["pullrequest"]
     matrix_spec: { version: ["4.0"], os-ssl-40: "*" }
     display_name: "${version} ${os-ssl-40}"
     tasks:
       - name: ".test !.enterprise-auth !.snappy !.zstd"
 
   - matrix_name: "tests-42-plus-zlib-zstd-support"
+    tags: ["pullrequest"]
     matrix_spec: { version: ["4.2", "4.4", "5.0", "6.0", "7.0", "latest"], os-ssl-40: "*" }
     display_name: "${version} ${os-ssl-40}"
     tasks:
@@ -2729,6 +2732,7 @@ buildvariants:
       - name: ".race"
 
   - matrix_name: "versioned-api-test"
+    tags: ["pullrequest"]
     matrix_spec: { version: ["5.0", "6.0", "7.0", "latest"], os-ssl-40: "*" }
     display_name: "API Version ${version} ${os-ssl-40}"
     tasks: