diff --git a/.current_gitmodules b/.current_gitmodules
index bc191766..1fd9d7e9 100644
--- a/.current_gitmodules
+++ b/.current_gitmodules
@@ -1 +1 @@
-160000 d58d131d10cddb7bc78edb164c8a105a4f8b757f 0	script-languages
+160000 957b8df429de78827bd298dfe2442f027b6e2737 0	script-languages
diff --git a/doc/changes/changes_8.1.0.md b/doc/changes/changes_8.1.0.md
index 71b4eb44..b9e970bc 100644
--- a/doc/changes/changes_8.1.0.md
+++ b/doc/changes/changes_8.1.0.md
@@ -26,7 +26,7 @@ n/a
 
 ## Refactoring
 
-n/a
+- #908: Pinned conda package
 
 ## Security
 
diff --git a/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-conda__template-Exasol-all-python-3.8-conda/udfclient_deps/conda_packages_diff.md b/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-conda__template-Exasol-all-python-3.8-conda/udfclient_deps/conda_packages_diff.md
index 0ad66668..5a73da0c 100644
--- a/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-conda__template-Exasol-all-python-3.8-conda/udfclient_deps/conda_packages_diff.md
+++ b/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-conda__template-Exasol-all-python-3.8-conda/udfclient_deps/conda_packages_diff.md
@@ -7,4 +7,5 @@
 |  2 | nss           | 3.77               | 3.100              | UPDATED  |
 |  3 | openssl       | 3.2.1              | 3.3.0              | UPDATED  |
 |  4 | zeromq        | 4.3.4              | 4.3.5              | UPDATED  |
-|  5 | _openmp_mutex | 4.5=2_kmp_llvm     | 4.5=2_kmp_llvm     |          |
\ No newline at end of file
+|  5 | libzlib       |                    | 1.2.13             | NEW      |
+|  6 | _openmp_mutex | 4.5=2_kmp_llvm     | 4.5=2_kmp_llvm     |          |
\ No newline at end of file
diff --git a/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-cuda-conda__template-Exasol-all-python-3.8-cuda-conda/udfclient_deps/conda_packages_diff.md b/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-cuda-conda__template-Exasol-all-python-3.8-cuda-conda/udfclient_deps/conda_packages_diff.md
index 0ad66668..5a73da0c 100644
--- a/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-cuda-conda__template-Exasol-all-python-3.8-cuda-conda/udfclient_deps/conda_packages_diff.md
+++ b/doc/changes/package_diffs/8.1.0/template-Exasol-all-python-3.10-cuda-conda__template-Exasol-all-python-3.8-cuda-conda/udfclient_deps/conda_packages_diff.md
@@ -7,4 +7,5 @@
 |  2 | nss           | 3.77               | 3.100              | UPDATED  |
 |  3 | openssl       | 3.2.1              | 3.3.0              | UPDATED  |
 |  4 | zeromq        | 4.3.4              | 4.3.5              | UPDATED  |
-|  5 | _openmp_mutex | 4.5=2_kmp_llvm     | 4.5=2_kmp_llvm     |          |
\ No newline at end of file
+|  5 | libzlib       |                    | 1.2.13             | NEW      |
+|  6 | _openmp_mutex | 4.5=2_kmp_llvm     | 4.5=2_kmp_llvm     |          |
\ No newline at end of file
diff --git a/script-languages b/script-languages
index d58d131d..957b8df4 160000
--- a/script-languages
+++ b/script-languages
@@ -1 +1 @@
-Subproject commit d58d131d10cddb7bc78edb164c8a105a4f8b757f
+Subproject commit 957b8df429de78827bd298dfe2442f027b6e2737