diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index 6e71fd660f..cd3eccff57 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -2620,6 +2620,7 @@ task_groups:
 
 buildvariants:
   - name: static-analysis
+    tags: ["pullrequest"]
     display_name: "Static Analysis"
     run_on:
       - rhel8.7-large
@@ -2638,6 +2639,7 @@ buildvariants:
       - name: ".performance"
 
   - name: build-check
+    tags: ["pullrequest"]
     display_name: "Compile Only Checks"
     run_on:
       - rhel8.7-large
@@ -2647,6 +2649,7 @@ buildvariants:
       - name: ".compile-check"
   
   - name: atlas-test
+    tags: ["pullrequest"]
     display_name: "Atlas test"
     run_on:
       - rhel8.7-large 
@@ -2656,6 +2659,7 @@ buildvariants:
       - name: "atlas-test"
 
   - name: atlas-data-lake-test
+    tags: ["pullrequest"]
     display_name: "Atlas Data Lake Test"
     run_on:
       - rhel8.7-large 
@@ -2665,19 +2669,22 @@ buildvariants:
       - name: "test-atlas-data-lake"
 
   - matrix_name: "tests-36-with-zlib-support"
-    matrix_spec: { version: ["3.6"], os-ssl-32: "*" }
+    tags: ["pullrequest"]
+    matrix_spec: { version: ["3.6"], os-ssl-32: ["windows-64-go-1-20", "rhel87-64-go-1-20"] }
     display_name: "${version} ${os-ssl-32}"
     tasks:
       - name: ".test !.enterprise-auth !.snappy !.zstd"
 
   - matrix_name: "tests-40-with-zlib-support"
-    matrix_spec: { version: ["4.0"], os-ssl-40: "*" }
+    tags: ["pullrequest"]
+    matrix_spec: { version: ["4.0"], os-ssl-40: ["windows-64-go-1-20", "rhel87-64-go-1-20"] }
     display_name: "${version} ${os-ssl-40}"
     tasks:
       - name: ".test !.enterprise-auth !.snappy !.zstd"
 
   - matrix_name: "tests-42-plus-zlib-zstd-support"
-    matrix_spec: { version: ["4.2", "4.4", "5.0", "6.0", "7.0", "latest"], os-ssl-40: "*" }
+    tags: ["pullrequest"]
+    matrix_spec: { version: ["4.2", "4.4", "5.0", "6.0", "7.0", "latest"], os-ssl-40: ["windows-64-go-1-20", "rhel87-64-go-1-20"] }
     display_name: "${version} ${os-ssl-40}"
     tasks:
       - name: ".test !.enterprise-auth !.snappy"
@@ -2718,13 +2725,15 @@ buildvariants:
       - name: ".ocsp-rsa !.ocsp-staple"
 
   - matrix_name: "race-test"
+    tags: ["pullrequest"]
     matrix_spec: { version: ["latest"], os-ssl-40: ["rhel87-64-go-1-20"] }
     display_name: "Race Detector Test"
     tasks:
       - name: ".race"
 
   - matrix_name: "versioned-api-test"
-    matrix_spec: { version: ["5.0", "6.0", "7.0", "latest"], os-ssl-40: "*" }
+    tags: ["pullrequest"]
+    matrix_spec: { version: ["5.0", "6.0", "7.0", "latest"], os-ssl-40: ["windows-64-go-1-20", "rhel87-64-go-1-20"] }
     display_name: "API Version ${version} ${os-ssl-40}"
     tasks:
       - name: ".versioned-api"
@@ -2736,12 +2745,14 @@ buildvariants:
       - name: ".kms-tls"
 
   - matrix_name: "load-balancer-test"
+    tags: ["pullrequest"]
     matrix_spec: { version: ["5.0", "6.0", "7.0", "latest", "rapid"], os-ssl-40: ["rhel87-64-go-1-20"] }
     display_name: "Load Balancer Support ${version} ${os-ssl-40}"
     tasks:
       - name: ".load-balancer"
 
   - matrix_name: "serverless"
+    tags: ["pullrequest"]
     matrix_spec: { os-serverless: "*" }
     display_name: "Serverless ${os-serverless}"
     tasks: