diff --git a/.github/workflows/examples-efr32.yaml b/.github/workflows/examples-efr32.yaml
index 7c5aad5eedffdd..aec229a9b7f920 100644
--- a/.github/workflows/examples-efr32.yaml
+++ b/.github/workflows/examples-efr32.yaml
@@ -25,7 +25,7 @@ concurrency:
 jobs:
   efr32:
     name: EFR32
-    timeout-minutes: 110 
+    timeout-minutes: 110
 
     env:
       EFR32_BOARD: BRD4161A
@@ -71,25 +71,25 @@ jobs:
             .environment/gn_out/.ninja_log
             .environment/pigweed-venv/*.log
 
-      - name: Build some BRD4161A variants
+      - name: Build some BRD4187C variants
         timeout-minutes: 50
         run: |
           ./scripts/run_in_build_env.sh \
              "./scripts/build/build_examples.py \
                 --enable-flashbundle \
-                --target-glob '*-brd4161a-{lock,light,switch,window-covering,unit-test}' \
+                --target-glob '*-brd4187c-{lock,light,switch,window-covering,unit-test}' \
                 build \
                 --copy-artifacts-to out/artifacts \
              "
       - name: Prepare some bloat report from the previous builds
         run: |
           .environment/pigweed-venv/bin/python3 scripts/tools/memory/gh_sizes.py \
-             efr32 BRD4161A lighting-app \
-             out/efr32-brd4161a-light/chip-efr32-lighting-example.out \
+             efr32 BRD4187C lighting-app \
+             out/efr32-brd4187c-light/chip-efr32-lighting-example.out \
              /tmp/bloat_reports/
           .environment/pigweed-venv/bin/python3 scripts/tools/memory/gh_sizes.py  \
-             efr32 BRD4161A window-app \
-             out/efr32-brd4161a-window-covering/chip-efr32-window-example.out \
+             efr32 BRD4187C window-app \
+             out/efr32-brd4187c-window-covering/chip-efr32-window-example.out \
              /tmp/bloat_reports/
       - name: Build example EFR32 Lighting App for BRD4161A with RPCs
         timeout-minutes: 15
diff --git a/scripts/build/build/targets.py b/scripts/build/build/targets.py
index 02ef6b7c369bae..2df597f363c9de 100755
--- a/scripts/build/build/targets.py
+++ b/scripts/build/build/targets.py
@@ -399,6 +399,7 @@ def Efr32Targets():
 
     board_targets = [
         efr_target.Extend('brd4161a', board=Efr32Board.BRD4161A),
+        efr_target.Extend('brd4187c', board=Efr32Board.BRD4187C),
         efr_target.Extend('brd4163a', board=Efr32Board.BRD4163A).GlobBlacklist(
             'only user requested'),
         efr_target.Extend('brd4164a', board=Efr32Board.BRD4164A).GlobBlacklist(
diff --git a/scripts/build/builders/efr32.py b/scripts/build/builders/efr32.py
index d4a536a1e80ca2..b75a8d05fcb8da 100644
--- a/scripts/build/builders/efr32.py
+++ b/scripts/build/builders/efr32.py
@@ -81,6 +81,7 @@ class Efr32Board(Enum):
     BRD4186A = 6
     BRD4187A = 7
     BRD4304A = 8
+    BRD4187C = 9
 
     def GnArgName(self):
         if self == Efr32Board.BRD4161A:
@@ -99,6 +100,8 @@ def GnArgName(self):
             return 'BRD4187A'
         elif self == Efr32Board.BRD4304A:
             return 'BRD4304A'
+        elif self == Efr32Board.BRD4187C:
+            return 'BRD4187C'
         else:
             raise Exception('Unknown board #: %r' % self)