diff --git a/library_builders.bat b/library_builders.bat
index f636e7b42f..e375d3c7c8 100644
--- a/library_builders.bat
+++ b/library_builders.bat
@@ -59,18 +59,11 @@ exit /b 0
 :build_blosc2
   if exist blosc2-stamp exit /b 0
 
-  curl -sLo blosc2-2.10.2.zip ^
-    https://github.com/Blosc/c-blosc2/archive/refs/tags/v2.10.2.zip
-  powershell Expand-Archive blosc2-2.10.2.zip -DestinationPath dep-blosc2
+  curl -sLo blosc2-2.11.1.zip ^
+    https://github.com/Blosc/c-blosc2/archive/refs/tags/v2.11.1.zip
+  powershell Expand-Archive blosc2-2.11.1.zip -DestinationPath dep-blosc2
 
-  :: Fix Threads search in Blosc2Config.cmake
-  :: https://github.com/Blosc/c-blosc2/pull/549
-  curl -sLo blosc2-threads.patch ^
-    https://github.com/Blosc/c-blosc2/pull/549.patch
-  python -m patch -p 1 -d dep-blosc2/c-blosc2-2.10.2 blosc2-threads.patch
-  if errorlevel 1 exit 1
-
-  cmake -S dep-blosc2/c-blosc2-2.10.2 -B build-blosc2 ^
+  cmake -S dep-blosc2/c-blosc2-2.11.1 -B build-blosc2 ^
     -DCMAKE_BUILD_TYPE=Release  ^
     -DBUILD_SHARED=OFF          ^
     -DBUILD_STATIC=ON           ^
diff --git a/library_builders.sh b/library_builders.sh
index 1e7ac882cb..507611f892 100644
--- a/library_builders.sh
+++ b/library_builders.sh
@@ -141,9 +141,6 @@ function build_adios2 {
     make -j${CPU_COUNT}
     make install
 
-    # CMake Config package of C-Blosc 2.10.1+ only
-    rm -rf ${BUILD_PREFIX}/lib*/cmake/adios2/FindBlosc2.cmake
-
     cd -
 
     rm -rf build-adios2
@@ -199,8 +196,8 @@ function build_blosc {
 function build_blosc2 {
     if [ -e blosc-stamp2 ]; then return; fi
 
-    curl -sLo blosc2-v2.10.2.tar.gz \
-        https://github.com/Blosc/c-blosc2/archive/refs/tags/v2.10.2.tar.gz
+    curl -sLo blosc2-v2.11.1.tar.gz \
+        https://github.com/Blosc/c-blosc2/archive/refs/tags/v2.11.1.tar.gz
     file blosc2*.tar.gz
     tar -xzf blosc2*.tar.gz
     rm blosc2*.tar.gz