diff --git a/Dockerfile-core b/Dockerfile-core
index c8b60c2..c655d56 100644
--- a/Dockerfile-core
+++ b/Dockerfile-core
@@ -13,6 +13,7 @@ RUN echo "APT::Acquire::Retries \"3\";" > /etc/apt/apt.conf.d/80-retries && \
       curl \
       git \
       xz-utils \
+      pkg-config \
 # For add-apt-repository:
       software-properties-common \
 # XML utils
diff --git a/Dockerfile-core-cuda12.1 b/Dockerfile-core-cuda12.1
index 7429b8c..c494a2c 100644
--- a/Dockerfile-core-cuda12.1
+++ b/Dockerfile-core-cuda12.1
@@ -13,6 +13,7 @@ RUN echo "APT::Acquire::Retries \"3\";" > /etc/apt/apt.conf.d/80-retries && \
       curl \
       git \
       xz-utils \
+      pkg-config \
 # For add-apt-repository:
       software-properties-common \
 # XML utils