diff --git a/.github/workflows/icu4c.yml b/.github/workflows/icu4c.yml
index 797e614cd68c..c7cb16b658c4 100644
--- a/.github/workflows/icu4c.yml
+++ b/.github/workflows/icu4c.yml
@@ -327,7 +327,8 @@ jobs:
           env:
             CC: clang-16
             CXX: clang++-16
-            CPPFLAGS: '-Wall -Wextra -Wno-strict-prototypes -Wctad-maybe-unsupported' # -Werror
+            # TODO: add '-Werror' after fixing ICU-22873
+            CPPFLAGS: '-Wall -Wextra -Wno-strict-prototypes -Wctad-maybe-unsupported'
             CXXFLAGS: ${{ matrix.flags }}
           run: |
             cd icu4c/source && ./runConfigureICU --enable-debug --disable-release Linux/clang && make -j -l4.5 check
@@ -340,7 +341,8 @@ jobs:
 
       - name: ICU4C with clang on MacOS
         env:
-          CPPFLAGS: '-Wall -Wextra -Wextra-semi -Wundef -Wnon-virtual-dtor -Wctad-maybe-unsupported' # -Werror TODO: uncomment warnings as errors
+          # TODO: add '-Werror' after fixing ICU-22874
+          CPPFLAGS: '-Wall -Wextra -Wextra-semi -Wundef -Wnon-virtual-dtor -Wctad-maybe-unsupported' 
         run: |
           cd icu4c/source;
           PYTHON=python3 ./runConfigureICU MacOSX;