diff --git a/pysam/libcbcf.pyi b/pysam/libcbcf.pyi
index bb875ddd..d62f1696 100644
--- a/pysam/libcbcf.pyi
+++ b/pysam/libcbcf.pyi
@@ -20,7 +20,7 @@ if sys.version_info < (3, 8):
 else:
     from typing import Literal
 
-from .libchtslib import HTSFile, _HasFileNo
+from pysam.libchtslib import HTSFile, _HasFileNo
 
 _D = TypeVar("_D")
 _K = TypeVar("_K", str, Union[int, str])
diff --git a/pysam/libcutils.pyx b/pysam/libcutils.pyx
index d5294f80..64cb97ae 100644
--- a/pysam/libcutils.pyx
+++ b/pysam/libcutils.pyx
@@ -20,10 +20,10 @@ from libc.stdio cimport stdout as c_stdout
 from posix.fcntl cimport open as c_open, O_WRONLY
 from posix.unistd cimport SEEK_SET, SEEK_CUR, SEEK_END
 
-from .libcsamtools cimport samtools_dispatch, samtools_set_stdout, samtools_set_stderr, \
+from pysam.libcsamtools cimport samtools_dispatch, samtools_set_stdout, samtools_set_stderr, \
     samtools_close_stdout, samtools_close_stderr, samtools_set_stdout_fn
 
-from .libcbcftools cimport bcftools_dispatch, bcftools_set_stdout, bcftools_set_stderr, \
+from pysam.libcbcftools cimport bcftools_dispatch, bcftools_set_stdout, bcftools_set_stderr, \
     bcftools_close_stdout, bcftools_close_stderr, bcftools_set_stdout_fn
 
 #####################################################################