Application I use requires OpenSSL 0.9.8, which was already installed (0.9.8e to be specific) on my CentOS alongside 1.0.1e which unfortunately is used by default. I tried to change libssl.so.10 symbolic link to point to the older version like so: [mckulpa@nuance-vm ~]$ ldd /usr/bin/openssl /usr/bin/openssl: /usr/lib64/libssl.so.10: no version information available (required by /usr/bin/openssl) linux-vdso.so.1 => (0x00007fff2edff000) libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007f664457c000) libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x0000003927600000) libkrb5.so.3 => /lib64/libkrb5.so.3 (0x0000003926200000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x0000003925a00000) libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x0000003926e00000) libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x0000003927200000) libdl.so.2 => /lib64/libdl.so.2 (0x000000391a600000) libz.so.1 => /lib64/libz.so.1 (0x000000391aa00000) libc.so.6 => /lib64/libc.so.6 (0x0000003919e00000) libcrypto.so.6 => /usr/lib64/libcrypto.so.6 (0x00007f664421d000) libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x0000003925e00000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x0000003926a00000) libresolv.so.2 => /lib64/libresolv.so.2 (0x000000391be00000) libpthread.so.0 => /lib64/libpthread.so.0 (0x000000391a200000) /lib64/ld-linux-x86-64.so.2 (0x0000003919600000) libselinux.so.1 => /lib64/libselinux.so.1 (0x000000391b600000) [mckulpa@nuance-vm ~]$ export LD_LIBRARY_PATH=~/libs:$LD_LIBRARY_PATH [mckulpa@nuance-vm ~]$ echo $LD_LIBRARY_PATH /home/mckulpa/libs:/usr/local/Nuance/Recognizer_Service/amd64/lib:/usr/local/Nuance/OAM/x86/lib:/usr/local/Nuance/Common/x86/lib:/usr/local/Nuance/Common/amd64/lib [mckulpa@nuance-vm ~]$ ldd /usr/bin/openssl /usr/bin/openssl: /home/mckulpa/libs/libssl.so.10: no version information available (required by /usr/bin/openssl) linux-vdso.so.1 => (0x00007fff91dbc000) libssl.so.10 => /home/mckulpa/libs/libssl.so.10 (0x00007ffe1af50000) libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x0000003927600000) libkrb5.so.3 => /lib64/libkrb5.so.3 (0x0000003926200000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x0000003925a00000) libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x0000003926e00000) libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x0000003927200000) libdl.so.2 => /lib64/libdl.so.2 (0x000000391a600000) libz.so.1 => /lib64/libz.so.1 (0x000000391aa00000) libc.so.6 => /lib64/libc.so.6 (0x0000003919e00000) libcrypto.so.6 => /usr/lib64/libcrypto.so.6 (0x00007ffe1abd9000) libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x0000003925e00000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x0000003926a00000) libresolv.so.2 => /lib64/libresolv.so.2 (0x000000391be00000) libpthread.so.0 => /lib64/libpthread.so.0 (0x000000391a200000) /lib64/ld-linux-x86-64.so.2 (0x0000003919600000) libselinux.so.1 => /lib64/libselinux.so.1 (0x000000391b600000) [mckulpa@nuance-vm ~]$ ls -l libs total 316 -rwxr-xr-x. 1 mckulpa mckulpa 321224 05-28 14:59 libssl.so.0.9.8e lrwxrwxrwx. 1 mckulpa mckulpa 16 05-28 15:18 libssl.so.10 -> libssl.so.0.9.8e but all I get is a warning and still the 1.0.1e version is printed out: [mckulpa@nuance-vm ~]$ openssl version openssl: /home/mckulpa/libs/libssl.so.10: no version information available (required by openssl) OpenSSL 1.0.1e-fips 11 Feb 2013 Any ideas how to do this properly?