diff --git a/CMakeLists.txt b/CMakeLists.txt
index 94caec757ab..916c775a0fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -121,16 +121,8 @@ endmacro()
 #===============================================================================
 
 if(OPENMC_USE_NCRYSTAL)
-  if(NOT DEFINED "NCrystal_DIR")
-    #Invocation of "ncrystal-config --show cmakedir" is needed to find NCrystal
-    #when it is installed from Python wheels:
-    execute_process(
-      COMMAND "ncrystal-config" "--show" "cmakedir"
-      OUTPUT_VARIABLE "NCrystal_DIR" OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-  endif()
-  find_package(NCrystal 3.8.0 REQUIRED)
-  message(STATUS "Found NCrystal: ${NCrystal_DIR} (version ${NCrystal_VERSION})")
+  find_package(NCrystal 4.0.0 REQUIRED)
+  message(STATUS "Found NCrystal: ${NCrystal_LIBRARIES} (version ${NCrystal_VERSION})")
 endif()
 
 #===============================================================================
diff --git a/cmake/OpenMCConfig.cmake.in b/cmake/OpenMCConfig.cmake.in
index b02bbffe5cf..668376ce5ae 100644
--- a/cmake/OpenMCConfig.cmake.in
+++ b/cmake/OpenMCConfig.cmake.in
@@ -10,16 +10,7 @@ if(@OPENMC_USE_DAGMC@)
 endif()
 
 if(@OPENMC_USE_NCRYSTAL@)
-  if(NOT DEFINED "NCrystal_DIR")
-    #Invocation of "ncrystal-config --show cmakedir" is needed to find NCrystal
-    #when it is installed from Python wheels:
-    execute_process(
-      COMMAND "ncrystal-config" "--show" "cmakedir"
-      OUTPUT_VARIABLE "NCrystal_DIR" OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-  endif()
-  find_package(NCrystal REQUIRED)
-  message(STATUS "Found NCrystal: ${NCrystal_DIR} (version ${NCrystal_VERSION})")
+  find_package(NCrystal REQUIRED HINTS @CMAKE_PREFIX_PATH@)
 endif()
 
 if(@OPENMC_USE_LIBMESH@)
diff --git a/tools/ci/gha-install-ncrystal.sh b/tools/ci/gha-install-ncrystal.sh
new file mode 100644
index 00000000000..3bc29ab5417
--- /dev/null
+++ b/tools/ci/gha-install-ncrystal.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+set -ex
+
+# NCrystal Variables
+NCRYSTAL_BRANCH='v4.0.0'
+NCRYSTAL_REPO='https://github.com/mctools/ncrystal'
+NCRYSTAL_INSTALL_DIR=$HOME/NCRYSTAL/
+
+CURRENT_DIR=$(pwd)
+
+# NCrystal Install
+cd $HOME
+git clone -b $NCRYSTAL_BRANCH $NCRYSTAL_REPO ncrystal
+cd ncrystal
+mkdir build && cd build
+cmake .. \
+    -DBUILD_SHARED_LIBS=ON \
+    -DNCRYSTAL_NOTOUCH_CMAKE_BUILD_TYPE=ON \
+    -DNCRYSTAL_MODIFY_RPATH=OFF \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DNCRYSTAL_ENABLE_EXAMPLES=OFF \
+    -DNCRYSTAL_ENABLE_SETUPSH=OFF \
+    -DNCRYSTAL_ENABLE_DATA=EMBED \
+    -DCMAKE_INSTALL_PREFIX="$NCRYSTAL_INSTALL_DIR"
+make -j4 && make install
+rm -rf $HOME/ncrystal
+cd $CURRENT_DIR
\ No newline at end of file
diff --git a/tools/ci/gha-install.py b/tools/ci/gha-install.py
index 1eb9a55b4dc..7cfb78e11a3 100644
--- a/tools/ci/gha-install.py
+++ b/tools/ci/gha-install.py
@@ -2,7 +2,6 @@
 import shutil
 import subprocess
 
-
 def install(omp=False, mpi=False, phdf5=False, dagmc=False, libmesh=False, ncrystal=False):
     # Create build directory and change to it
     shutil.rmtree('build', ignore_errors=True)
@@ -42,6 +41,8 @@ def install(omp=False, mpi=False, phdf5=False, dagmc=False, libmesh=False, ncrys
 
     if ncrystal:
         cmake_cmd.append('-DOPENMC_USE_NCRYSTAL=ON')
+        ncrystal_path = os.environ.get('HOME') + '/NCRYSTAL'
+        cmake_cmd.append(f'-DCMAKE_PREFIX_PATH={ncrystal_path}')
 
     # Build in coverage mode for coverage testing
     cmake_cmd.append('-DOPENMC_ENABLE_COVERAGE=on')
diff --git a/tools/ci/gha-install.sh b/tools/ci/gha-install.sh
index 50f110ed4e6..f7c95ddff1c 100755
--- a/tools/ci/gha-install.sh
+++ b/tools/ci/gha-install.sh
@@ -16,9 +16,8 @@ fi
 
 # Install NCrystal if needed
 if [[ $NCRYSTAL = 'y' ]]; then
-    pip install 'ncrystal>=4.0.0'
-    #Basic quick verification:
-    nctool --test
+    chmod +x ./tools/ci/gha-install-ncrystal.sh
+    ./tools/ci/gha-install-ncrystal.sh
 fi
 
 # Install vectfit for WMP generation if needed
diff --git a/tools/ci/gha-script.sh b/tools/ci/gha-script.sh
index 4733907eb25..7d98e152456 100755
--- a/tools/ci/gha-script.sh
+++ b/tools/ci/gha-script.sh
@@ -14,9 +14,9 @@ if [[ $EVENT == 'y' ]]; then
   args="${args} --event "
 fi
 
-# Check NCrystal installation
+# Install NCrystal for testing
 if [[ $NCRYSTAL = 'y' ]]; then
-  nctool --test
+  pip install ncrystal
 fi
 
 # Run regression and unit tests