diff --git a/yarn.lock b/yarn.lock
index 2637dbf..66fc701 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -671,7 +671,7 @@ __metadata:
     "@effect/schema": "npm:0.67.14"
     "@temporalio/activity": "npm:1.8.6"
     "@temporalio/workflow": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.3"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:20"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"
@@ -696,9 +696,9 @@ __metadata:
     "@diachronic/util": "workspace:^"
     "@diachronic/workflow": "workspace:^"
     "@effect-use/temporal-client": "npm:4.0.0"
-    "@temporalio/testing": "npm:*"
+    "@temporalio/testing": "npm:1.8.6"
     "@temporalio/workflow": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.1"
+    "@types/jest": "npm:29.5.3"
     "@types/luxon": "npm:^3.4.2"
     "@types/node": "npm:20"
     "@types/ramda": "npm:0.30.0"
@@ -720,7 +720,7 @@ __metadata:
   resolution: "@diachronic/effect-schema-spark@workspace:packages/effect-schema-spark"
   dependencies:
     "@effect/schema": "npm:0.67.14"
-    "@types/jest": "npm:^29.5.3"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:18"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"
@@ -740,7 +740,7 @@ __metadata:
     "@diachronic/toolbox": "workspace:^"
     "@effect-use/http-client": "npm:4.0.0"
     "@effect/schema": "npm:0.67.14"
-    "@types/jest": "npm:^29.5.3"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:18"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"
@@ -762,10 +762,10 @@ __metadata:
     "@diachronic/util": "workspace:^"
     "@effect-use/http-client": "npm:4.0.0"
     "@effect/schema": "npm:0.67.14"
-    "@types/jest": "npm:^29.5.3"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:20"
     effect: "npm:3.2.5"
-    fastify: "npm:^4.23.2"
+    fastify: "npm:4.23.2"
     jest: "npm:29.5.0"
     prettier: "npm:2.8.8"
     ts-jest: "npm:29.1.0"
@@ -779,12 +779,12 @@ __metadata:
   resolution: "@diachronic/k8s-health-check@workspace:packages/k8s-health-check"
   dependencies:
     "@effect/schema": "npm:0.67.14"
-    "@types/jest": "npm:^29.5.5"
+    "@types/jest": "npm:29.5.3"
     effect: "npm:3.2.5"
-    fastify: "npm:^4.23.2"
-    jest: "npm:^29.7.0"
-    ts-jest: "npm:^29.1.1"
-    typescript: "npm:^5.5.3"
+    fastify: "npm:4.23.2"
+    jest: "npm:29.5.0"
+    ts-jest: "npm:29.1.0"
+    typescript: "npm:5.4.5"
   languageName: unknown
   linkType: soft
 
@@ -796,7 +796,7 @@ __metadata:
     "@diachronic/workflow": "workspace:^"
     "@effect/schema": "npm:0.67.14"
     "@temporalio/testing": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.2"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:18"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"
@@ -822,18 +822,18 @@ __metadata:
     "@diachronic/k8s-health-check": "workspace:^"
     "@diachronic/util": "workspace:^"
     "@diachronic/workflow-request-response": "workspace:^"
-    "@effect-use/http-client": "npm:^4.0.0"
+    "@effect-use/http-client": "npm:4.0.0"
     "@effect-use/temporal-client": "npm:4.0.0"
     "@effect/schema": "npm:0.67.14"
     "@temporalio/worker": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.12"
+    "@types/jest": "npm:29.5.3"
     "@types/ms": "npm:^0.7.31"
     "@types/node": "npm:20"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"
     fast-check: "npm:^3.19"
-    fastify: "npm:^4.28.1"
-    jest: "npm:^29.7.0"
+    fastify: "npm:4.23.2"
+    jest: "npm:29.5.0"
     prettier: "npm:2.8.8"
     ts-node: "npm:^10.9.1"
     typescript: "npm:5.4.5"
@@ -866,9 +866,9 @@ __metadata:
     js-yaml: "npm:^4.1.0"
     ms: "npm:^2.1.3"
     prettier: "npm:2.8.8"
-    ramda: "npm:^0.30.1"
+    ramda: "npm:0.30.0"
     ts-node: "npm:^10.9.1"
-    typescript: "npm:^5.5.3"
+    typescript: "npm:5.4.5"
     xstate: "npm:5.0.0-beta.27"
     yargs: "npm:^17.7.2"
   languageName: unknown
@@ -879,14 +879,14 @@ __metadata:
   resolution: "@diachronic/util@workspace:packages/util"
   dependencies:
     "@effect/schema": "npm:0.67.14"
-    "@types/jest": "npm:^29.5.5"
+    "@types/jest": "npm:29.5.3"
     "@types/js-yaml": "npm:4.0.9"
     "@types/uuid": "npm:^9.0.8"
     effect: "npm:3.2.5"
-    jest: "npm:^29.7.0"
+    jest: "npm:29.5.0"
     js-yaml: "npm:4.1.0"
-    ts-jest: "npm:^29.1.1"
-    typescript: "npm:^5.5.3"
+    ts-jest: "npm:29.1.0"
+    typescript: "npm:5.4.5"
     uuid: "npm:9.0.1"
   languageName: unknown
   linkType: soft
@@ -904,7 +904,7 @@ __metadata:
     "@temporalio/testing": "npm:1.8.6"
     "@temporalio/worker": "npm:1.8.6"
     "@temporalio/workflow": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.3"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:20"
     effect: "npm:3.2.5"
     jest: "npm:29.5.0"
@@ -934,7 +934,7 @@ __metadata:
     "@temporalio/testing": "npm:1.8.6"
     "@temporalio/worker": "npm:1.8.6"
     "@temporalio/workflow": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.3"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:20"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"
@@ -8265,7 +8265,7 @@ __metadata:
     "@effect/schema": "npm:0.67.14"
     "@temporalio/testing": "npm:1.8.6"
     "@temporalio/worker": "npm:1.8.6"
-    "@types/jest": "npm:^29.5.2"
+    "@types/jest": "npm:29.5.3"
     "@types/node": "npm:20"
     "@types/ramda": "npm:0.30.0"
     effect: "npm:3.2.5"