diff --git a/Cargo.lock b/Cargo.lock
index c9fb7e1e149..3cabff4234f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2308,9 +2308,9 @@ dependencies = [
 
 [[package]]
 name = "mobc"
-version = "0.8.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc79c4a77e312fee9c7bd4b957c12ad1196db73c4a81e5c0b13f02083c4f7f2f"
+checksum = "0bdeff49b387edef305eccfe166af3e1483bb57902dbf369dddc42dc824df23b"
 dependencies = [
  "async-trait",
  "futures-channel",
diff --git a/query-engine/black-box-tests/tests/metrics/smoke_tests.rs b/query-engine/black-box-tests/tests/metrics/smoke_tests.rs
index e3826d9cafe..6b81dd2e3e8 100644
--- a/query-engine/black-box-tests/tests/metrics/smoke_tests.rs
+++ b/query-engine/black-box-tests/tests/metrics/smoke_tests.rs
@@ -55,15 +55,21 @@ mod smoke_tests {
                 .await
                 .unwrap();
 
+            // counters
             assert!(metrics.contains("prisma_client_queries_total counter"));
             assert!(metrics.contains("prisma_datasource_queries_total counter"));
-            assert!(metrics.contains("prisma_pool_connections_open counter"));
-            assert!(metrics.contains("prisma_client_queries_active gauge"));
-            assert!(metrics.contains("prisma_client_queries_wait gauge"));
+            assert!(metrics.contains("prisma_pool_connections_opened_total counter"));
+            assert!(metrics.contains("prisma_pool_connections_closed_total counter"));
+            // gauges
+            assert!(metrics.contains("prisma_pool_connections_open gauge"));
             assert!(metrics.contains("prisma_pool_connections_busy gauge"));
             assert!(metrics.contains("prisma_pool_connections_idle gauge"));
-            assert!(metrics.contains("prisma_pool_connections_opened_total gauge"));
-            assert!(metrics.contains("prisma_datasource_queries_duration_histogram_ms_bucket"));
+            assert!(metrics.contains("prisma_client_queries_active gauge"));
+            assert!(metrics.contains("prisma_client_queries_wait gauge"));
+            // histograms
+            assert!(metrics.contains("prisma_client_queries_duration_histogram_ms histogram"));
+            assert!(metrics.contains("prisma_client_queries_wait_histogram_ms histogram"));
+            assert!(metrics.contains("prisma_datasource_queries_duration_histogram_ms histogram"));
         })
         .await
     }
diff --git a/query-engine/metrics/src/lib.rs b/query-engine/metrics/src/lib.rs
index 4e9fcc69f5c..4fb3be90ad4 100644
--- a/query-engine/metrics/src/lib.rs
+++ b/query-engine/metrics/src/lib.rs
@@ -79,11 +79,18 @@ const ACCEPT_LIST: &[&str] = &[
     MOBC_POOL_CONNECTIONS_IDLE,
     MOBC_POOL_WAIT_COUNT,
     MOBC_POOL_WAIT_DURATION,
-    PRISMA_CLIENT_QUERIES_DURATION_HISTOGRAM_MS,
     PRISMA_CLIENT_QUERIES_TOTAL,
-    PRISMA_DATASOURCE_QUERIES_DURATION_HISTOGRAM_MS,
     PRISMA_DATASOURCE_QUERIES_TOTAL,
+    PRISMA_POOL_CONNECTIONS_OPENED_TOTAL,
+    PRISMA_POOL_CONNECTIONS_CLOSED_TOTAL,
+    PRISMA_POOL_CONNECTIONS_OPEN,
+    PRISMA_POOL_CONNECTIONS_BUSY,
+    PRISMA_POOL_CONNECTIONS_IDLE,
+    PRISMA_CLIENT_QUERIES_WAIT,
     PRISMA_CLIENT_QUERIES_ACTIVE,
+    PRISMA_CLIENT_QUERIES_DURATION_HISTOGRAM_MS,
+    PRISMA_CLIENT_QUERIES_WAIT_HISTOGRAM_MS,
+    PRISMA_DATASOURCE_QUERIES_DURATION_HISTOGRAM_MS,
 ];
 
 // Some of the metrics we receive have their internal names, and we need to expose them under a different