diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce53257..fc19924 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,11 @@ This project did not use formal release tags through most of its history, so thi
 
 - Added this curated root changelog, distilled from the complete Git history.
 
+### Changed
+
+- Updated active firmware metadata to reference CRUMBS `0.12.4` and
+  `bread-crumbs-contracts` `0.4.3`.
+
 ### Notes
 
 - The root README still contains template placeholder sections.
diff --git a/firmware/platformio.ini b/firmware/platformio.ini
index 709dec3..4830a61 100644
--- a/firmware/platformio.ini
+++ b/firmware/platformio.ini
@@ -11,8 +11,8 @@ upload_speed = 115200
 monitor_speed = 115200
 lib_deps =
     fastled/FastLED @ ^3.6.0
-    cameronbrooks11/CRUMBS @ ^0.12.0
-    cameronbrooks11/bread-crumbs-contracts @ ^0.4.1
+    cameronbrooks11/CRUMBS @ ^0.12.4
+    cameronbrooks11/bread-crumbs-contracts @ ^0.4.3
     br3ttb/PID @ ^1.2.1
     https://github.com/adafruit/MAX6675-library.git
 build_flags =
diff --git a/slice.yaml b/slice.yaml
index a2ea5ec..ed8737d 100644
--- a/slice.yaml
+++ b/slice.yaml
@@ -106,8 +106,8 @@ firmware:
     - "gen2_nanoevery"
   lib_deps:
     - "fastled/FastLED @ ^3.6.0"
-    - "cameronbrooks11/CRUMBS @ ^0.12.0"
-    - "cameronbrooks11/bread-crumbs-contracts @ ^0.4.1"
+    - "cameronbrooks11/CRUMBS @ ^0.12.4"
+    - "cameronbrooks11/bread-crumbs-contracts @ ^0.4.3"
     - "br3ttb/PID @ ^1.2.1"
     - "https://github.com/adafruit/MAX6675-library.git"