diff --git a/requirements/dev.in b/requirements/dev.in
index 05e5148..337acf2 100644
--- a/requirements/dev.in
+++ b/requirements/dev.in
@@ -19,6 +19,7 @@ click>=8.1
 mypy>=1.10
 bandit[toml]>=1.7
 pip-audit>=2.7
+prometheus-client>=0.20,<1
 ruff
 pyyaml
 setuptools>=83.0.0
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 1629344..09aa888 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1040,6 +1040,10 @@ pluggy==1.6.0 \
     # via
     #   pytest
     #   pytest-cov
+prometheus-client==0.26.0 \
+    --hash=sha256:04a91bcf94e2cf74a44a1a874d651a2e853ed354b6e822f3b7487751465d5c2b \
+    --hash=sha256:fa93d06737aa02bacd05794768508bb97d2fbee28cb3bca04eaae92f0ca953d6
+    # via -r requirements/dev.in
 py-serializable==2.1.0 \
     --hash=sha256:9d5db56154a867a9b897c0163b33a793c804c80cee984116d02d49e4578fc103 \
     --hash=sha256:b56d5d686b5a03ba4f4db5e769dc32336e142fc3bd4d68a8c25579ebb0a67304