diff --git a/.github/workflows/build-in-base-env.yml b/.github/workflows/build-in-base-env.yml
deleted file mode 100644
index daf22bff94..0000000000
--- a/.github/workflows/build-in-base-env.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-name: Build in UTBot base_env
-
-on:
-  pull_request:
-    branches: [utbot-main]
-  push:
-    branches: [utbot-main]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/unittestbot/utbotcpp/base_env:02-02-2022
-      credentials:
-        username: ${{ github.actor }}
-        password: ${{ secrets.GITHUB_TOKEN }}
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
-      - name: Run build.sh
-        run: |
-          ./build.sh
-      - name: Run tests
-        run: |
-          cd build && ninja check
diff --git a/utbot-build.sh b/utbot-build.sh
deleted file mode 100755
index 12f4182699..0000000000
--- a/utbot-build.sh
+++ /dev/null
@@ -1,35 +0,0 @@
-#!/bin/bash
-# This script is used to build KLEE as UTBot backend
-
-set -e
-set -o pipefail
-mkdir -p build
-cd build
-
-$UTBOT_CMAKE_BINARY -G Ninja \
-  -DCMAKE_PREFIX_PATH=$UTBOT_INSTALL_DIR/lib/cmake/z3 \
-  -DCMAKE_LIBRARY_PATH=$UTBOT_INSTALL_DIR/lib \
-  -DCMAKE_INCLUDE_PATH=$UTBOT_INSTALL_DIR/include \
-  -DENABLE_SOLVER_Z3=TRUE \
-  -DENABLE_POSIX_RUNTIME=TRUE \
-  -DENABLE_KLEE_UCLIBC=ON \
-  -DKLEE_UCLIBC_PATH=$UTBOT_ALL/klee-uclibc \
-  -DENABLE_FLOATING_POINT=TRUE \
-  -DENABLE_FP_RUNTIME=TRUE \
-  -DLLVM_CONFIG_BINARY=$UTBOT_INSTALL_DIR/bin/llvm-config \
-  -DLLVMCC=/utbot_distr/install/bin/clang \
-  -DLLVMCXX=/utbot_distr/install/bin/clang++ \
-  -DENABLE_UNIT_TESTS=TRUE \
-  -DENABLE_SYSTEM_TESTS=TRUE \
-  -DGTEST_SRC_DIR=$UTBOT_ALL/gtest \
-  -DGTEST_INCLUDE_DIR=$UTBOT_ALL/gtest/googletest/include \
-  -DCMAKE_INSTALL_PREFIX=$UTBOT_ALL/klee \
-  -DENABLE_KLEE_LIBCXX=TRUE \
-  -DKLEE_LIBCXX_DIR=$UTBOT_ALL/libcxx/install \
-  -DKLEE_LIBCXX_INCLUDE_DIR=$UTBOT_ALL/libcxx/install/include/c++/v1 \
-  -DENABLE_KLEE_EH_CXX=TRUE \
-  -DKLEE_LIBCXXABI_SRC_DIR=$UTBOT_ALL/libcxx/libcxxabi \
-   ..
-
-$UTBOT_CMAKE_BINARY --build .
-$UTBOT_CMAKE_BINARY --install .