diff --git a/clock_divider.vhdl b/clock_divider.vhd
similarity index 100%
rename from clock_divider.vhdl
rename to clock_divider.vhd
diff --git a/clock_divider_tb.vhdl b/clock_divider_tb.vhd
similarity index 100%
rename from clock_divider_tb.vhdl
rename to clock_divider_tb.vhd
diff --git a/string_sender.vhdl b/string_sender.vhd
similarity index 100%
rename from string_sender.vhdl
rename to string_sender.vhd
diff --git a/string_sender_tb.vhdl b/string_sender_tb.vhd
similarity index 100%
rename from string_sender_tb.vhdl
rename to string_sender_tb.vhd
diff --git a/top.vhdl b/top.vhd
similarity index 100%
rename from top.vhdl
rename to top.vhd
diff --git a/top_tb.vhdl b/top_tb.vhd
similarity index 100%
rename from top_tb.vhdl
rename to top_tb.vhd
diff --git a/uart_tx.vhdl b/uart_tx.vhd
similarity index 100%
rename from uart_tx.vhdl
rename to uart_tx.vhd
diff --git a/uart_tx_tb.vhdl b/uart_tx_tb.vhd
similarity index 100%
rename from uart_tx_tb.vhdl
rename to uart_tx_tb.vhd