diff --git a/cmake/dependencies/AMReX.cmake b/cmake/dependencies/AMReX.cmake
index bb0eb8b0ac1..8c26c558292 100644
--- a/cmake/dependencies/AMReX.cmake
+++ b/cmake/dependencies/AMReX.cmake
@@ -171,7 +171,7 @@ macro(find_amrex)
         endif()
         set(COMPONENT_PRECISION ${WarpX_PRECISION} P${WarpX_PRECISION})
 
-        find_package(AMReX 21.02 CONFIG REQUIRED COMPONENTS ${COMPONENT_ASCENT} ${COMPONENT_DIM} ${COMPONENT_EB} PARTICLES ${COMPONENT_PIC} ${COMPONENT_PRECISION} TINYP LSOLVERS)
+        find_package(AMReX 21.03 CONFIG REQUIRED COMPONENTS ${COMPONENT_ASCENT} ${COMPONENT_DIM} ${COMPONENT_EB} PARTICLES ${COMPONENT_PIC} ${COMPONENT_PRECISION} TINYP LSOLVERS)
         message(STATUS "AMReX: Found version '${AMReX_VERSION}'")
     endif()
 endmacro()
@@ -185,7 +185,7 @@ set(WarpX_amrex_src ""
 set(WarpX_amrex_repo "https://github.com/AMReX-Codes/amrex.git"
     CACHE STRING
     "Repository URI to pull and build AMReX from if(WarpX_amrex_internal)")
-set(WarpX_amrex_branch "47389357d5de37d84be69d9b06a294e64cb2a96b"
+set(WarpX_amrex_branch "21.03"
     CACHE STRING
     "Repository branch for WarpX_amrex_repo if(WarpX_amrex_internal)")
 
diff --git a/cmake/dependencies/PICSAR.cmake b/cmake/dependencies/PICSAR.cmake
index 7e496c0e8cd..a5a2ba35d2c 100644
--- a/cmake/dependencies/PICSAR.cmake
+++ b/cmake/dependencies/PICSAR.cmake
@@ -77,7 +77,7 @@ function(find_picsar)
         #message(STATUS "PICSAR: Using version '${PICSAR_VERSION}'")
     else()
         # not supported by PICSAR (yet)
-        #find_package(PICSAR 21.02 CONFIG REQUIRED QED)
+        #find_package(PICSAR 21.03 CONFIG REQUIRED QED)
         #message(STATUS "PICSAR: Found version '${PICSAR_VERSION}'")
         message(FATAL_ERROR "PICSAR: Cannot be used as externally installed "
             "library yet. "
diff --git a/run_test.sh b/run_test.sh
index 3d5078242c8..d65f1cfb804 100755
--- a/run_test.sh
+++ b/run_test.sh
@@ -51,7 +51,7 @@ echo "cd $PWD"
 
 # Clone PICSAR and AMReX
 git clone https://github.com/AMReX-Codes/amrex.git
-cd amrex && git checkout 47389357d5de37d84be69d9b06a294e64cb2a96b && cd -
+cd amrex && git checkout 21.03 && cd -
 # Use QED brach for QED tests
 git clone https://github.com/ECP-WarpX/picsar.git
 cd picsar && git checkout b35f07243c51ac35d47857fe36f0aafb6b517955 && cd -