diff --git a/ports/alembic/CONTROL b/ports/alembic/CONTROL
index e95c999d7..5d9e05635 100644
--- a/ports/alembic/CONTROL
+++ b/ports/alembic/CONTROL
@@ -1,5 +1,5 @@
 Source: alembic
-Version: 1.7.11-5
+Version: 1.7.11-6
 Build-Depends: ilmbase, hdf5
 Description: Alembic is an open framework for storing and sharing scene data that includes a C++ library, a file format, and client plugins and applications.
 Homepage: https://alembic.io/
diff --git a/ports/alembic/fix-find-openexr-ilmbase.patch b/ports/alembic/fix-find-openexr-ilmbase.patch
index fdd24249a..6a72711f4 100644
--- a/ports/alembic/fix-find-openexr-ilmbase.patch
+++ b/ports/alembic/fix-find-openexr-ilmbase.patch
@@ -1,5 +1,5 @@
 diff --git a/cmake/AlembicIlmBase.cmake b/cmake/AlembicIlmBase.cmake
-index cd00d70..a73c8db 100644
+index cd00d70..0e50512 100644
 --- a/cmake/AlembicIlmBase.cmake
 +++ b/cmake/AlembicIlmBase.cmake
 @@ -33,11 +33,25 @@
@@ -30,6 +30,18 @@ index cd00d70..a73c8db 100644
      SET(ALEMBIC_ILMBASE_LIBS
          ${ALEMBIC_ILMBASE_IMATH_LIB}
          ${ALEMBIC_ILMBASE_ILMTHREAD_LIB}
+@@ -45,9 +59,9 @@ IF (ILMBASE_FOUND)
+         ${ALEMBIC_ILMBASE_HALF_LIB}
+     )
+ 
+-    if (${ALEMBIC_ILMBASE_IEXMATH_LIB})
++    if (ALEMBIC_ILMBASE_IEXMATH_LIB)
+         SET(ALEMBIC_ILMBASE_LIBS ${ALEMBIC_ILMBASE_LIBS} ${ALEMBIC_ILMBASE_IEXMATH_LIB})
+-    endif (${ALEMBIC_ILMBASE_IEXMATH_LIB})
++    endif (ALEMBIC_ILMBASE_IEXMATH_LIB)
+ 
+ ELSE()
+     SET(ALEMBIC_ILMBASE_FOUND 0 CACHE STRING "Set to 1 if IlmBase is found, 0 otherwise")
 diff --git a/cmake/AlembicOpenEXR.cmake b/cmake/AlembicOpenEXR.cmake
 index 0833b32..a9180cd 100644
 --- a/cmake/AlembicOpenEXR.cmake
diff --git a/ports/openexr/CONTROL b/ports/openexr/CONTROL
index 5fc8b52d6..7d8759237 100644
--- a/ports/openexr/CONTROL
+++ b/ports/openexr/CONTROL
@@ -1,5 +1,5 @@
 Source: openexr
-Version: 2.3.0-4
+Version: 2.3.0-5
 Homepage: https://www.openexr.com/
 Description: OpenEXR is a high dynamic-range (HDR) image file format developed by Industrial Light & Magic for use in computer imaging applications
 Build-Depends: zlib
diff --git a/ports/openexr/FindOpenEXR.cmake b/ports/openexr/FindOpenEXR.cmake
index 4b5b280a0..f036c742e 100644
--- a/ports/openexr/FindOpenEXR.cmake
+++ b/ports/openexr/FindOpenEXR.cmake
@@ -49,7 +49,7 @@ endif()
 
 if(NOT OpenEXR_IEXMATH_LIBRARY)
   find_library(OpenEXR_IEXMATH_LIBRARY_RELEASE NAMES IexMath-${OpenEXR_LIB_SUFFIX})
-  find_library(OpenEXR_IEXMATH_LIBRARY_DEBUG NAMES IexMath-${OpenEXR_LIB_SUFFIX}d)
+  find_library(OpenEXR_IEXMATH_LIBRARY_DEBUG NAMES IexMath-${OpenEXR_LIB_SUFFIX}_d)
   select_library_configurations(OpenEXR_IEXMATH)
 endif()