diff --git a/ci/run_ctests.sh b/ci/run_ctests.sh
index 1493f87..992fdba 100755
--- a/ci/run_ctests.sh
+++ b/ci/run_ctests.sh
@@ -1,10 +1,26 @@
 #!/bin/bash
-# SPDX-FileCopyrightText: Copyright (c) 2025-2026, NVIDIA CORPORATION.
+# SPDX-FileCopyrightText: Copyright (c) 2025-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
 set -euo pipefail
 
 # Support customizing the ctests' install location
-cd "${INSTALL_PREFIX:-${CONDA_PREFIX:-/usr}}/bin/gtests/libnvforest/"
+
+# First, try the installed location (CI/conda environments)
+installed_test_location="${INSTALL_PREFIX:-${CONDA_PREFIX:-/usr}}/bin/gtests/libnvforest/"
+
+# Fall back to the build directory (devcontainer environments)
+devcontainers_test_location="$(dirname "$(realpath "${BASH_SOURCE[0]}")")/../cpp/build/latest"
+
+if [[ -d "${installed_test_location}" ]]; then
+    cd "${installed_test_location}"
+elif [[ -d "${devcontainers_test_location}" ]]; then
+    cd "${devcontainers_test_location}"
+else
+    echo "Error: Test location not found. Searched:" >&2
+    echo "  - ${installed_test_location}" >&2
+    echo "  - ${devcontainers_test_location}" >&2
+    exit 1
+fi
 
 ctest --output-on-failure --no-tests=error "$@"
diff --git a/ci/run_nvforest_pytests.sh b/ci/run_nvforest_pytests.sh
index 3eea476..72ed248 100755
--- a/ci/run_nvforest_pytests.sh
+++ b/ci/run_nvforest_pytests.sh
@@ -1,9 +1,12 @@
 #!/bin/bash
-# SPDX-FileCopyrightText: Copyright (c) 2025-2026, NVIDIA CORPORATION.
+# SPDX-FileCopyrightText: Copyright (c) 2025-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
 set -euo pipefail
 
+# Support invoking run_nvforest_pytests.sh outside the script directory
+cd "$(dirname "$(realpath "${BASH_SOURCE[0]}")")"/..
+
 python -m pytest \
   --cache-clear \
   "$@" \