diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index acb5e044..16b9f47f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,7 @@ jobs:
           nix log  .#hobbesPackages/clang-${{ matrix.clang }}-ASanAndUBSan/hobbes &> ${{ matrix.os }}-clang-${{ matrix.clang }}-ASanAndUBSan-hobbes.log
       - name: upload log ${{ matrix.os }}-clang-${{ matrix.clang }}-ASanAndUBSan-hobbes.log
         if: ${{ always() }}
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v3
         with:
           name: output-log-file
           path: ${{ matrix.os }}-clang-${{ matrix.clang }}-ASanAndUBSan-hobbes.log
@@ -55,7 +55,7 @@ jobs:
           nix log  .#hobbesPackages/clang-${{ matrix.clang }}/hobbes &> ${{ matrix.os }}-clang-${{ matrix.clang }}-hobbes.log
       - name: upload log ${{ matrix.os }}-clang-${{ matrix.clang }}-hobbes.log
         if: ${{ always() }}
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v3
         with:
           name: output-log-file
           path: ${{ matrix.os }}-clang-${{ matrix.clang }}-hobbes.log
@@ -85,8 +85,7 @@ jobs:
           nix log  .#hobbesPackages/gcc-${{ matrix.gcc }}/llvm-${{ matrix.llvm }}/hobbes &> ${{ matrix.os }}-gcc-${{ matrix.gcc }}-llvm-${{ matrix.llvm }}-hobbes.log
       - name: upload log ${{ matrix.os }}-gcc-${{ matrix.gcc }}-llvm-${{ matrix.llvm }}-hobbes.log
         if: ${{ always() }}
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v3
         with:
           name: output-log-file
-          path: ${{ matrix.os }}-gcc-${{ matrix.gcc }}-llvm-${{ matrix.llvm }}-hobbes.log
-
+          path: ${{ matrix.os }}-gcc-${{ matrix.gcc }}-llvm-${{ matrix.llvm }}-hobbes.log
\ No newline at end of file
diff --git a/lib/hobbes/eval/func.C b/lib/hobbes/eval/func.C
index 345ef03b..6e1fdfa8 100644
--- a/lib/hobbes/eval/func.C
+++ b/lib/hobbes/eval/func.C
@@ -190,6 +190,13 @@ BOP(i16mul, CreateMul,  int128_t, int128_t, int128_t);
 BOP(i16div, CreateSDiv, int128_t, int128_t, int128_t);
 BOP(i16rem, CreateSRem, int128_t, int128_t, int128_t);
 
+BOP(i16shl, CreateShl, int128_t, int128_t, int128_t);
+BOP(i16lshr, CreateLShr, int128_t, int128_t, int128_t);
+BOP(i16ashr, CreateAShr, int128_t, int128_t, int128_t);
+BOP(i16and, CreateAnd, int128_t, int128_t, int128_t);
+BOP(i16or, CreateOr, int128_t, int128_t, int128_t);
+BOP(i16xor, CreateXor, int128_t, int128_t, int128_t);
+
 BOP(i16eq,  CreateICmpEQ,  int128_t, int128_t, bool);
 BOP(i16neq, CreateICmpNE,  int128_t, int128_t, bool);
 BOP(i16lt,  CreateICmpSLT, int128_t, int128_t, bool);
@@ -1105,6 +1112,8 @@ void initDefOperators(cc* c) {
   DEC(iadd);   DEC(isub);   DEC(imul);   DEC(idiv);   DEC(irem);
   DEC(ladd);   DEC(lsub);   DEC(lmul);   DEC(ldiv);   DEC(lrem);
   DEC(i16add); DEC(i16sub); DEC(i16mul); DEC(i16div); DEC(i16rem);
+  DEC(i16shl); DEC(i16lshr); DEC(i16ashr); DEC(i16and); DEC(i16or);DEC(i16xor);
+
   DEC(fadd);   DEC(fsub);   DEC(fmul);   DEC(fdiv);
   DEC(dadd);   DEC(dsub);   DEC(dmul);   DEC(ddiv);