diff --git a/.github/workflows/mertricstest.yml b/.github/workflows/mertricstest.yml
index 91478e4..366f5bd 100644
--- a/.github/workflows/mertricstest.yml
+++ b/.github/workflows/mertricstest.yml
@@ -78,7 +78,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           metricstest -test.v -test.run=^TestIteration1$ \
             -binary-path=cmd/server/server
@@ -103,7 +104,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           metricstest -test.v -test.run=^TestIteration2[AB]*$ \
             -source-path=. \
@@ -123,7 +125,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           metricstest -test.v -test.run=^TestIteration3[AB]*$ \
             -source-path=. \
@@ -143,7 +146,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -166,7 +170,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -188,7 +193,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -209,7 +215,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -229,7 +236,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -248,7 +256,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -267,7 +276,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -285,7 +295,8 @@ jobs:
           github.head_ref == 'iter11' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -302,7 +313,8 @@ jobs:
           github.ref == 'refs/heads/main' ||
           github.head_ref == 'iter12' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -318,7 +330,8 @@ jobs:
         if: |
           github.ref == 'refs/heads/main' ||
           github.head_ref == 'iter13' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -333,7 +346,8 @@ jobs:
       - name: "Code increment #14"
         if: |
           github.ref == 'refs/heads/main' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           SERVER_PORT=$(random unused-port)
           ADDRESS="localhost:${SERVER_PORT}"
@@ -349,6 +363,7 @@ jobs:
       - name: "Code increment #14 (race detection)"
         if: |
           github.ref == 'refs/heads/main' ||
-          github.head_ref == 'iter14'
+          github.head_ref == 'iter14' ||
+          github.head_ref == 'iter15'
         run: |
           go test -v -race ./...